{"id":5157,"date":"2025-09-24T14:42:19","date_gmt":"2025-09-24T13:42:19","guid":{"rendered":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//?page_id=5157"},"modified":"2026-03-31T12:34:14","modified_gmt":"2026-03-31T11:34:14","slug":"environmental-tracers-and-groundwater-dating","status":"publish","type":"page","link":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//","title":{"rendered":"Environmental tracers and groundwater dating"},"content":{"rendered":"/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<section class=/groundwater/wp-json/wp/v2/pages/5157/"hero-section hero-section-with-social/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"hero-info-wrap/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"container/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"row/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"col-12/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"hero-info/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<h1>Environmental tracers and groundwater dating</groundwater/wp-json/wp/v2/pages/5157//h1>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"social-wrap social-wrap-inline-them/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"sea-background-f/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<span>Share this article</groundwater/wp-json/wp/v2/pages/5157//span><a target=/groundwater/wp-json/wp/v2/pages/5157/"_blank/groundwater/wp-json/wp/v2/pages/5157/"  href=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.facebook.com/groundwater/wp-json/wp/v2/pages/5157//sharer/groundwater/wp-json/wp/v2/pages/5157//sharer.php?u=https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"icon-facebook/groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"hidden/groundwater/wp-json/wp/v2/pages/5157/">Facebook</groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//a><a target=/groundwater/wp-json/wp/v2/pages/5157/"_blank/groundwater/wp-json/wp/v2/pages/5157/"  href=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//twitter.com/groundwater/wp-json/wp/v2/pages/5157//intent/groundwater/wp-json/wp/v2/pages/5157//tweet?text=Environmental%20tracers%20and%20groundwater%20dating&#038;url=https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"icon-twitter/groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"hidden/groundwater/wp-json/wp/v2/pages/5157/">Twitter</groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//a><a   onclick=/groundwater/wp-json/wp/v2/pages/5157/"javascript:void( (function() {var e=document.createElement('script' );e.setAttribute('type','text/groundwater/wp-json/wp/v2/pages/5157//javascript' );e.setAttribute('charset','UTF-8' );e.setAttribute('src','/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//assets.pinterest.com/groundwater/wp-json/wp/v2/pages/5157//js/groundwater/wp-json/wp/v2/pages/5157//pinmarklet.js?r='+Math.random()*99999999);document.body.appendChild(e)})());/groundwater/wp-json/wp/v2/pages/5157/"  href=/groundwater/wp-json/wp/v2/pages/5157/"javascript:void(0);/groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"icon-pinterest/groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"hidden/groundwater/wp-json/wp/v2/pages/5157/">Pinterest</groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//a><a target=/groundwater/wp-json/wp/v2/pages/5157/"_blank/groundwater/wp-json/wp/v2/pages/5157/"  href=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//wa.me?text=https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"icon-whatsapp/groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"hidden/groundwater/wp-json/wp/v2/pages/5157/">WhatsApp</groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//a><a   href=/groundwater/wp-json/wp/v2/pages/5157/"mailto:?subject=Environmental%20tracers%20and%20groundwater%20dating&#038;body=Dating%20groundwater%20by%20using%20various%20chemicals,%20including%20CFCs%20and%20tritium.%20(https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//)/groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"icon-mail/groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"hidden/groundwater/wp-json/wp/v2/pages/5157/">Email</groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//a><a href=/groundwater/wp-json/wp/v2/pages/5157/"#/groundwater/wp-json/wp/v2/pages/5157/" data-copy=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/" class=/groundwater/wp-json/wp/v2/pages/5157/"copy-url-on-click/groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"icon-link/groundwater/wp-json/wp/v2/pages/5157/"><span class=/groundwater/wp-json/wp/v2/pages/5157/"hidden/groundwater/wp-json/wp/v2/pages/5157/">Copy Link</groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//span></groundwater/wp-json/wp/v2/pages/5157//a></groundwater/wp-json/wp/v2/pages/5157//div></groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//section>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<section class=/groundwater/wp-json/wp/v2/pages/5157/"wp-block-bgs-blocks-content-container content-section/groundwater/wp-json/wp/v2/pages/5157/"><div class=/groundwater/wp-json/wp/v2/pages/5157/"container/groundwater/wp-json/wp/v2/pages/5157/"><div class=/groundwater/wp-json/wp/v2/pages/5157/"row/groundwater/wp-json/wp/v2/pages/5157/"><div class=/groundwater/wp-json/wp/v2/pages/5157/"col-12/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n<p class=/groundwater/wp-json/wp/v2/pages/5157/"wp-block-paragraph/groundwater/wp-json/wp/v2/pages/5157/">BGS is the UK&#8217;s leading organisation for groundwater dating and tracing. We use a wide range of environmental agents for this work including chlorofluorocarbons (CFCs), sulfur hexafluoride (SF<sub>6</groundwater/wp-json/wp/v2/pages/5157//sub>), tritium (<sup>3</groundwater/wp-json/wp/v2/pages/5157//sup>H), radiocarbon (<sup>14</groundwater/wp-json/wp/v2/pages/5157//sup>C) and stable isotopes. We also frequently use stable isotopes of water for understanding sources of groundwater recharge and recharge processes such as surface/groundwater/wp-json/wp/v2/pages/5157//groundwater interactions in catchments.</groundwater/wp-json/wp/v2/pages/5157//p>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<figure  class=/groundwater/wp-json/wp/v2/pages/5157/"img-wrap/groundwater/wp-json/wp/v2/pages/5157/"><a href=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//P641030.webp/groundwater/wp-json/wp/v2/pages/5157/" data-toggle=/groundwater/wp-json/wp/v2/pages/5157/"lightbox/groundwater/wp-json/wp/v2/pages/5157/" data-footer=/groundwater/wp-json/wp/v2/pages/5157/"&lt;p&gt;Groundwater sampling in Bishkek, Kyrgyzstan, where CFCs and SF&lt;sub&gt;6&lt;/groundwater/wp-json/wp/v2/pages/5157//sub&gt; have been used by BGS to determine water movement beneath the city. BGS /groundwater/wp-json/wp/v2/pages/5157/u00a9 UKRI.&lt;/groundwater/wp-json/wp/v2/pages/5157//p&gt;/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/" data-gallery=/groundwater/wp-json/wp/v2/pages/5157/"gallery_7580/groundwater/wp-json/wp/v2/pages/5157/"><img decoding=/groundwater/wp-json/wp/v2/pages/5157/"async/groundwater/wp-json/wp/v2/pages/5157/" src=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//P641030.webp/groundwater/wp-json/wp/v2/pages/5157/" class=/groundwater/wp-json/wp/v2/pages/5157/"lazy-blur/groundwater/wp-json/wp/v2/pages/5157/" alt=/groundwater/wp-json/wp/v2/pages/5157/"A man in a white hat and dark green top is kneeling by a large water pump, taking measurement, There are snowy mountains in the background./groundwater/wp-json/wp/v2/pages/5157/" data-src=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//P641030.webp/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//></groundwater/wp-json/wp/v2/pages/5157//a><figcaption class=/groundwater/wp-json/wp/v2/pages/5157/"caption /groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"caption-icon/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<img decoding=/groundwater/wp-json/wp/v2/pages/5157/"async/groundwater/wp-json/wp/v2/pages/5157/" src=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//themes/groundwater/wp-json/wp/v2/pages/5157//bgs/groundwater/wp-json/wp/v2/pages/5157//img/groundwater/wp-json/wp/v2/pages/5157//info-caption.svg/groundwater/wp-json/wp/v2/pages/5157/" alt=/groundwater/wp-json/wp/v2/pages/5157/"Information icon/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"caption-text/groundwater/wp-json/wp/v2/pages/5157/"><p>Groundwater sampling in Bishkek, Kyrgyzstan, where CFCs and SF<sub>6</groundwater/wp-json/wp/v2/pages/5157//sub> have been used by BGS to determine water movement beneath the city. BGS /groundwater/wp-json/wp/v2/pages/5157/u00a9 UKRI.</groundwater/wp-json/wp/v2/pages/5157//p>/groundwater/wp-json/wp/v2/pages/5157/n</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"expand-box expand-box-top/groundwater/wp-json/wp/v2/pages/5157/"><a href=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//P641030.webp/groundwater/wp-json/wp/v2/pages/5157/" ><img decoding=/groundwater/wp-json/wp/v2/pages/5157/"async/groundwater/wp-json/wp/v2/pages/5157/" src=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//themes/groundwater/wp-json/wp/v2/pages/5157//bgs/groundwater/wp-json/wp/v2/pages/5157//img/groundwater/wp-json/wp/v2/pages/5157//expand.svg/groundwater/wp-json/wp/v2/pages/5157/" alt=/groundwater/wp-json/wp/v2/pages/5157/"Expand icon/groundwater/wp-json/wp/v2/pages/5157/"></groundwater/wp-json/wp/v2/pages/5157//a></groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//figcaption></groundwater/wp-json/wp/v2/pages/5157//figure>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<p class=/groundwater/wp-json/wp/v2/pages/5157/"wp-block-paragraph/groundwater/wp-json/wp/v2/pages/5157/">Some of our work includes:</groundwater/wp-json/wp/v2/pages/5157//p>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<ul class=/groundwater/wp-json/wp/v2/pages/5157/"wp-block-list/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n<li>characterising the isotopic fingerprint of phosphorus in drinking water</groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>investigating residence-time distribution in Chalk catchments</groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>using age indicators to aid water supply operational planning</groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>assessing the extent of induced leakage to urban aquifers</groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>identifying basin-scale groundwater quality trends</groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>determining the fate of nitrogen in moorland catchments</groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>evaluating the effects of large-scale quarrying on groundwater movement</groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>delineating the occurrence of pristine ice-age groundwaters in the UK</groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n</groundwater/wp-json/wp/v2/pages/5157//ul>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<h2 class=/groundwater/wp-json/wp/v2/pages/5157/"wp-block-heading/groundwater/wp-json/wp/v2/pages/5157/">Why is the age of groundwater important?</groundwater/wp-json/wp/v2/pages/5157//h2>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<p class=/groundwater/wp-json/wp/v2/pages/5157/"wp-block-paragraph/groundwater/wp-json/wp/v2/pages/5157/">There are various reasons why it can be important to know the age of groundwater in a particular aquifer. For example: </groundwater/wp-json/wp/v2/pages/5157//p>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<ul class=/groundwater/wp-json/wp/v2/pages/5157/"wp-block-list/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n<li>does age validate the hydrogeological concept? </groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>is the water a mixture of different ages? </groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>is the water sustainable or being &#8216;mined&#8217;? </groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>did the water recharge in pre-industrial times? </groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<li>was the water recharged during the ice age, that is, under different climatic conditions?</groundwater/wp-json/wp/v2/pages/5157//li>/groundwater/wp-json/wp/v2/pages/5157/n</groundwater/wp-json/wp/v2/pages/5157//ul>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<h2 class=/groundwater/wp-json/wp/v2/pages/5157/"wp-block-heading/groundwater/wp-json/wp/v2/pages/5157/">Which constituents can be used to date groundwater?</groundwater/wp-json/wp/v2/pages/5157//h2>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<figure  class=/groundwater/wp-json/wp/v2/pages/5157/"img-wrap/groundwater/wp-json/wp/v2/pages/5157/"><img decoding=/groundwater/wp-json/wp/v2/pages/5157/"async/groundwater/wp-json/wp/v2/pages/5157/" src=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2026/groundwater/wp-json/wp/v2/pages/5157//03/groundwater/wp-json/wp/v2/pages/5157//groundwater-tracers.webp/groundwater/wp-json/wp/v2/pages/5157/" class=/groundwater/wp-json/wp/v2/pages/5157/"lazy-blur/groundwater/wp-json/wp/v2/pages/5157/" alt=/groundwater/wp-json/wp/v2/pages/5157/"groundwater-tracers/groundwater/wp-json/wp/v2/pages/5157/" data-src=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2026/groundwater/wp-json/wp/v2/pages/5157//03/groundwater/wp-json/wp/v2/pages/5157//groundwater-tracers.webp/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//><figcaption class=/groundwater/wp-json/wp/v2/pages/5157/"caption sm-line/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"caption-icon/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<img decoding=/groundwater/wp-json/wp/v2/pages/5157/"async/groundwater/wp-json/wp/v2/pages/5157/" src=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//themes/groundwater/wp-json/wp/v2/pages/5157//bgs/groundwater/wp-json/wp/v2/pages/5157//img/groundwater/wp-json/wp/v2/pages/5157//info-caption.svg/groundwater/wp-json/wp/v2/pages/5157/" alt=/groundwater/wp-json/wp/v2/pages/5157/"Information icon/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"caption-text/groundwater/wp-json/wp/v2/pages/5157/"><p>Methods that can be used to cover a range of ages in groundwaters. BGS /groundwater/wp-json/wp/v2/pages/5157/u00a9 UKRI</groundwater/wp-json/wp/v2/pages/5157//p>/groundwater/wp-json/wp/v2/pages/5157/n</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//figcaption></groundwater/wp-json/wp/v2/pages/5157//figure>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<p class=/groundwater/wp-json/wp/v2/pages/5157/"wp-block-paragraph/groundwater/wp-json/wp/v2/pages/5157/">Some tracers, such as CFCs and SF6, are introduced to groundwater as a result of human inputs to the environment and are best suited to dating &#8216;younger&#8217; groundwaters with mean ages of typically less than 100 years. Tracers such as tritium (3H), produced from naturally and from anthropogenic sources, and 3He produced primarily due to the decay of 3H, can be used in combination (3H/groundwater/wp-json/wp/v2/pages/5157//3He) to date groundwaters &lt;50 years old.&nbsp; Other groundwater dating tracers, for example 39Ar, 14C and 4He, are produced naturally in the environment and are suitable for dating waters that are several hundred to many thousands of years old. In some cases, anthropogenic tracers can also be used in combination with other environmental tracers, such as water isotopes (d18 or&nbsp;d2H) or radiocarbon (14C-DIC) to trace groundwater flow-paths, different sources, assess which groundwater flow model can be used for age determination and to understand the different age components of groundwater pumped from wells for supply.&nbsp;</groundwater/wp-json/wp/v2/pages/5157//p>/groundwater/wp-json/wp/v2/pages/5157/n</groundwater/wp-json/wp/v2/pages/5157//div></groundwater/wp-json/wp/v2/pages/5157//div></groundwater/wp-json/wp/v2/pages/5157//div></groundwater/wp-json/wp/v2/pages/5157//section>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/n<section class=/groundwater/wp-json/wp/v2/pages/5157/"cta-section  sea-background-e /groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"container/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"row md-row/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"col-12/groundwater/wp-json/wp/v2/pages/5157/">/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<h2>Need more information?</groundwater/wp-json/wp/v2/pages/5157//h2>/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t<div class=/groundwater/wp-json/wp/v2/pages/5157/"btn-wrap/groundwater/wp-json/wp/v2/pages/5157/"><a href=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//people/groundwater/wp-json/wp/v2/pages/5157//lapworth-daniel/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/"  class=/groundwater/wp-json/wp/v2/pages/5157/"button primary-background   /groundwater/wp-json/wp/v2/pages/5157/">Contact Dan Lapworth</groundwater/wp-json/wp/v2/pages/5157//a></groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t</groundwater/wp-json/wp/v2/pages/5157//div>/groundwater/wp-json/wp/v2/pages/5157/n</groundwater/wp-json/wp/v2/pages/5157//section>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t","protected":false},"excerpt":{"rendered":"<p>Dating groundwater by using various chemicals, including CFCs and tritium.</groundwater/wp-json/wp/v2/pages/5157//p>/groundwater/wp-json/wp/v2/pages/5157/n","protected":false},"author":7,"featured_media":5159,"parent":55,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"1","_relevanssi_noindex_reason":"","footnotes":""},"tags":[],"class_list":["post-5157","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//yoast.com/groundwater/wp-json/wp/v2/pages/5157//product/groundwater/wp-json/wp/v2/pages/5157//yoast-seo-wordpress/groundwater/wp-json/wp/v2/pages/5157// -->/groundwater/wp-json/wp/v2/pages/5157/n<title>Environmental tracers and groundwater dating - BGS Groundwater</groundwater/wp-json/wp/v2/pages/5157//title>/groundwater/wp-json/wp/v2/pages/5157/n<meta name=/groundwater/wp-json/wp/v2/pages/5157/"description/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"BGS undertook a/groundwater/wp-json/wp/v2/pages/5157/u00a0review of emerging contaminants in groundwater, which includes a review of previous literature./groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta name=/groundwater/wp-json/wp/v2/pages/5157/"robots/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<link rel=/groundwater/wp-json/wp/v2/pages/5157/"canonical/groundwater/wp-json/wp/v2/pages/5157/" href=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:locale/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"en_GB/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:type/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"article/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:title/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"Environmental tracers and groundwater dating - BGS Groundwater/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:description/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"BGS undertook a/groundwater/wp-json/wp/v2/pages/5157/u00a0review of emerging contaminants in groundwater, which includes a review of previous literature./groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:url/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:site_name/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"BGS Groundwater/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta property=/groundwater/wp-json/wp/v2/pages/5157/"article:modified_time/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"2026-03-31T11:34:14+00:00/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:image/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//P641030.webp/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:image:width/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"936/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:image:height/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"628/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t<meta property=/groundwater/wp-json/wp/v2/pages/5157/"og:image:type/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"image/groundwater/wp-json/wp/v2/pages/5157//webp/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta name=/groundwater/wp-json/wp/v2/pages/5157/"twitter:card/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"summary_large_image/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<meta name=/groundwater/wp-json/wp/v2/pages/5157/"twitter:label1/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"Estimated reading time/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n/groundwater/wp-json/wp/v2/pages/5157/t<meta name=/groundwater/wp-json/wp/v2/pages/5157/"twitter:data1/groundwater/wp-json/wp/v2/pages/5157/" content=/groundwater/wp-json/wp/v2/pages/5157/"2 minutes/groundwater/wp-json/wp/v2/pages/5157/" /groundwater/wp-json/wp/v2/pages/5157//>/groundwater/wp-json/wp/v2/pages/5157/n<script type=/groundwater/wp-json/wp/v2/pages/5157/"application/groundwater/wp-json/wp/v2/pages/5157//ld+json/groundwater/wp-json/wp/v2/pages/5157/" class=/groundwater/wp-json/wp/v2/pages/5157/"yoast-schema-graph/groundwater/wp-json/wp/v2/pages/5157/">{/groundwater/wp-json/wp/v2/pages/5157/"@context/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//schema.org/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"@graph/groundwater/wp-json/wp/v2/pages/5157/":[{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"WebPage/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"url/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"name/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"Environmental tracers and groundwater dating - BGS Groundwater/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"isPartOf/groundwater/wp-json/wp/v2/pages/5157/":{/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#website/groundwater/wp-json/wp/v2/pages/5157/"},/groundwater/wp-json/wp/v2/pages/5157/"primaryImageOfPage/groundwater/wp-json/wp/v2/pages/5157/":{/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#primaryimage/groundwater/wp-json/wp/v2/pages/5157/"},/groundwater/wp-json/wp/v2/pages/5157/"image/groundwater/wp-json/wp/v2/pages/5157/":{/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#primaryimage/groundwater/wp-json/wp/v2/pages/5157/"},/groundwater/wp-json/wp/v2/pages/5157/"thumbnailUrl/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//P641030.webp/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"datePublished/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"2025-09-24T13:42:19+00:00/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"dateModified/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"2026-03-31T11:34:14+00:00/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"description/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"BGS undertook a/groundwater/wp-json/wp/v2/pages/5157/u00a0review of emerging contaminants in groundwater, which includes a review of previous literature./groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"breadcrumb/groundwater/wp-json/wp/v2/pages/5157/":{/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#breadcrumb/groundwater/wp-json/wp/v2/pages/5157/"},/groundwater/wp-json/wp/v2/pages/5157/"inLanguage/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"en-GB/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"potentialAction/groundwater/wp-json/wp/v2/pages/5157/":[{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"ReadAction/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"target/groundwater/wp-json/wp/v2/pages/5157/":[/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/"]}]},{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"ImageObject/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"inLanguage/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"en-GB/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#primaryimage/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"url/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//P641030.webp/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"contentUrl/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//P641030.webp/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"width/groundwater/wp-json/wp/v2/pages/5157/":936,/groundwater/wp-json/wp/v2/pages/5157/"height/groundwater/wp-json/wp/v2/pages/5157/":628,/groundwater/wp-json/wp/v2/pages/5157/"caption/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"Groundwater sampling in Bishkek, Kyrgyzstan, where CFCs and SF6 have been used by BGS to determine water movement beneath the city. BGS /groundwater/wp-json/wp/v2/pages/5157/u00a9 UKRI./groundwater/wp-json/wp/v2/pages/5157/"},{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"BreadcrumbList/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#breadcrumb/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"itemListElement/groundwater/wp-json/wp/v2/pages/5157/":[{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"ListItem/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"position/groundwater/wp-json/wp/v2/pages/5157/":1,/groundwater/wp-json/wp/v2/pages/5157/"name/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"Home/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"item/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/"},{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"ListItem/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"position/groundwater/wp-json/wp/v2/pages/5157/":2,/groundwater/wp-json/wp/v2/pages/5157/"name/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"Quality/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"item/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/"},{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"ListItem/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"position/groundwater/wp-json/wp/v2/pages/5157/":3,/groundwater/wp-json/wp/v2/pages/5157/"name/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"Environmental tracers and groundwater dating/groundwater/wp-json/wp/v2/pages/5157/"}]},{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"WebSite/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#website/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"url/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"name/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"BGS Groundwater/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"description/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"publisher/groundwater/wp-json/wp/v2/pages/5157/":{/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#organization/groundwater/wp-json/wp/v2/pages/5157/"},/groundwater/wp-json/wp/v2/pages/5157/"potentialAction/groundwater/wp-json/wp/v2/pages/5157/":[{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"SearchAction/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"target/groundwater/wp-json/wp/v2/pages/5157/":{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"EntryPoint/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"urlTemplate/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//?s={search_term_string}/groundwater/wp-json/wp/v2/pages/5157/"},/groundwater/wp-json/wp/v2/pages/5157/"query-input/groundwater/wp-json/wp/v2/pages/5157/":{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"PropertyValueSpecification/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"valueRequired/groundwater/wp-json/wp/v2/pages/5157/":true,/groundwater/wp-json/wp/v2/pages/5157/"valueName/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"search_term_string/groundwater/wp-json/wp/v2/pages/5157/"}}],/groundwater/wp-json/wp/v2/pages/5157/"inLanguage/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"en-GB/groundwater/wp-json/wp/v2/pages/5157/"},{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"Organization/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#organization/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"name/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"BGS Groundwater/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"url/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"logo/groundwater/wp-json/wp/v2/pages/5157/":{/groundwater/wp-json/wp/v2/pages/5157/"@type/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"ImageObject/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"inLanguage/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"en-GB/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//schema/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//logo/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//image/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"url/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//2026/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//05/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//BGS_Groundwater_pos-object-text-clip.svg/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"contentUrl/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//2026/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//05/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//BGS_Groundwater_pos-object-text-clip.svg/groundwater/wp-json/wp/v2/pages/5157/",/groundwater/wp-json/wp/v2/pages/5157/"width/groundwater/wp-json/wp/v2/pages/5157/":472,/groundwater/wp-json/wp/v2/pages/5157/"height/groundwater/wp-json/wp/v2/pages/5157/":98,/groundwater/wp-json/wp/v2/pages/5157/"caption/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"BGS Groundwater/groundwater/wp-json/wp/v2/pages/5157/"},/groundwater/wp-json/wp/v2/pages/5157/"image/groundwater/wp-json/wp/v2/pages/5157/":{/groundwater/wp-json/wp/v2/pages/5157/"@id/groundwater/wp-json/wp/v2/pages/5157/":/groundwater/wp-json/wp/v2/pages/5157/"https:/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//#/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//schema/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//logo/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//image/groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157//groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157/"}}]}</groundwater/wp-json/wp/v2/pages/5157//script>/groundwater/wp-json/wp/v2/pages/5157/n<!-- /groundwater/wp-json/wp/v2/pages/5157// Yoast SEO plugin. -->","yoast_head_json":{"title":"Environmental tracers and groundwater dating - BGS Groundwater","description":"BGS undertook a/groundwater/wp-json/wp/v2/pages/5157/u00a0review of emerging contaminants in groundwater, which includes a review of previous literature.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//","og_locale":"en_GB","og_type":"article","og_title":"Environmental tracers and groundwater dating - BGS Groundwater","og_description":"BGS undertook a/groundwater/wp-json/wp/v2/pages/5157/u00a0review of emerging contaminants in groundwater, which includes a review of previous literature.","og_url":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//","og_site_name":"BGS Groundwater","article_modified_time":"2026-03-31T11:34:14+00:00","og_image":[{"width":936,"height":628,"url":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//P641030.webp","type":"image/groundwater/wp-json/wp/v2/pages/5157//webp"}],"twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"2 minutes"},"schema":{"@context":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//schema.org","@graph":[{"@type":"WebPage","@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//","url":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//","name":"Environmental tracers and groundwater dating - BGS Groundwater","isPartOf":{"@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//#website"},"primaryImageOfPage":{"@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//#primaryimage"},"image":{"@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//#primaryimage"},"thumbnailUrl":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//P641030.webp","datePublished":"2025-09-24T13:42:19+00:00","dateModified":"2026-03-31T11:34:14+00:00","description":"BGS undertook a/groundwater/wp-json/wp/v2/pages/5157/u00a0review of emerging contaminants in groundwater, which includes a review of previous literature.","breadcrumb":{"@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//#primaryimage","url":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//P641030.webp","contentUrl":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2025/groundwater/wp-json/wp/v2/pages/5157//09/groundwater/wp-json/wp/v2/pages/5157//P641030.webp","width":936,"height":628,"caption":"Groundwater sampling in Bishkek, Kyrgyzstan, where CFCs and SF6 have been used by BGS to determine water movement beneath the city. BGS /groundwater/wp-json/wp/v2/pages/5157/u00a9 UKRI."},{"@type":"BreadcrumbList","@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//environmental-tracers-and-groundwater-dating/groundwater/wp-json/wp/v2/pages/5157//#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//"},{"@type":"ListItem","position":2,"name":"Quality","item":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//quality/groundwater/wp-json/wp/v2/pages/5157//"},{"@type":"ListItem","position":3,"name":"Environmental tracers and groundwater dating"}]},{"@type":"WebSite","@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//#website","url":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//","name":"BGS Groundwater","description":"","publisher":{"@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//#organization","name":"BGS Groundwater","url":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//#/groundwater/wp-json/wp/v2/pages/5157//schema/groundwater/wp-json/wp/v2/pages/5157//logo/groundwater/wp-json/wp/v2/pages/5157//image/groundwater/wp-json/wp/v2/pages/5157//","url":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2026/groundwater/wp-json/wp/v2/pages/5157//05/groundwater/wp-json/wp/v2/pages/5157//BGS_Groundwater_pos-object-text-clip.svg","contentUrl":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-content/groundwater/wp-json/wp/v2/pages/5157//uploads/groundwater/wp-json/wp/v2/pages/5157//sites/groundwater/wp-json/wp/v2/pages/5157//4/groundwater/wp-json/wp/v2/pages/5157//2026/groundwater/wp-json/wp/v2/pages/5157//05/groundwater/wp-json/wp/v2/pages/5157//BGS_Groundwater_pos-object-text-clip.svg","width":472,"height":98,"caption":"BGS Groundwater"},"image":{"@id":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//#/groundwater/wp-json/wp/v2/pages/5157//schema/groundwater/wp-json/wp/v2/pages/5157//logo/groundwater/wp-json/wp/v2/pages/5157//image/groundwater/wp-json/wp/v2/pages/5157//"}}]}},"_links":{"self":[{"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//pages/groundwater/wp-json/wp/v2/pages/5157//5157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//pages"}],"about":[{"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//types/groundwater/wp-json/wp/v2/pages/5157//page"}],"author":[{"embeddable":true,"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//users/groundwater/wp-json/wp/v2/pages/5157//7"}],"replies":[{"embeddable":true,"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//comments?post=5157"}],"version-history":[{"count":8,"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//pages/groundwater/wp-json/wp/v2/pages/5157//5157/groundwater/wp-json/wp/v2/pages/5157//revisions"}],"predecessor-version":[{"id":8165,"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//pages/groundwater/wp-json/wp/v2/pages/5157//5157/groundwater/wp-json/wp/v2/pages/5157//revisions/groundwater/wp-json/wp/v2/pages/5157//8165"}],"up":[{"embeddable":true,"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//pages/groundwater/wp-json/wp/v2/pages/5157//55"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//media/groundwater/wp-json/wp/v2/pages/5157//5159"}],"wp:attachment":[{"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//media?parent=5157"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//www.bgs.ac.uk/groundwater/wp-json/wp/v2/pages/5157//groundwater/groundwater/wp-json/wp/v2/pages/5157//wp-json/groundwater/wp-json/wp/v2/pages/5157//wp/groundwater/wp-json/wp/v2/pages/5157//v2/groundwater/wp-json/wp/v2/pages/5157//tags?post=5157"}],"curies":[{"name":"wp","href":"https:/groundwater/wp-json/wp/v2/pages/5157///groundwater/wp-json/wp/v2/pages/5157//api.w.org/groundwater/wp-json/wp/v2/pages/5157//{rel}","templated":true}]}}