{"id":36552,"date":"2026-05-05T17:41:37","date_gmt":"2026-05-05T17:41:37","guid":{"rendered":"https:\/\/www.tun.com\/home\/?p=36552"},"modified":"2026-05-07T17:41:39","modified_gmt":"2026-05-07T17:41:39","slug":"saudi-arabias-wastewater-could-solve-its-groundwater-crisis","status":"publish","type":"post","link":"https:\/\/www.tun.com\/home\/saudi-arabias-wastewater-could-solve-its-groundwater-crisis\/","title":{"rendered":"Saudi Arabia&#8217;s Wastewater Could Solve Its Groundwater Crisis"},"content":{"rendered":"\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-uagb-blockquote uagb-block-e7eb3fc3 uagb-blockquote__skin-border uagb-blockquote__stack-img-none\"><blockquote class=\"uagb-blockquote\"><div class=\"uagb-blockquote__content\">Saudi Arabia loses groundwater faster than nature can replace it \u2014 but a new study suggests the country&#8217;s massive surplus of treated wastewater could help refill depleted aquifers and secure long-term water supplies across one of the world&#8217;s driest regions.<\/div><footer><div class=\"uagb-blockquote__author-wrap uagb-blockquote__author-at-left\"><\/div><\/footer><\/blockquote><\/div>\n\n\n\n<div class=\"wp-block-group is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-0dfbf163 wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"has-text-align-left wp-block-post-author\"><div class=\"wp-block-post-author__content\"><p class=\"wp-block-post-author__name\">The University Network<\/p><\/div><\/div>\n\n\n<div class=\"wp-block-uagb-social-share uagb-social-share__outer-wrap uagb-social-share__layout-horizontal uagb-block-ee584a31\">\n<div class=\"wp-block-uagb-social-share-child uagb-ss-repeater uagb-ss__wrapper uagb-block-ec619ce7\"><span class=\"uagb-ss__link\" data-href=\"https:\/\/www.facebook.com\/sharer.php?u=\" tabindex=\"0\" role=\"button\" aria-label=\"facebook\"><span class=\"uagb-ss__source-wrap\"><span class=\"uagb-ss__source-icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256c0 123.8 90.69 226.4 209.3 245V327.7h-63V256h63v-54.64c0-62.15 37-96.48 93.67-96.48 27.14 0 55.52 4.84 55.52 4.84v61h-31.28c-30.8 0-40.41 19.12-40.41 38.73V256h68.78l-11 71.69h-57.78V501C413.3 482.4 504 379.8 504 256z\"><\/path><\/svg><\/span><\/span><\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-social-share-child uagb-ss-repeater uagb-ss__wrapper uagb-block-32d99934\"><span class=\"uagb-ss__link\" data-href=\"https:\/\/twitter.com\/share?url=\" tabindex=\"0\" role=\"button\" aria-label=\"twitter\"><span class=\"uagb-ss__source-wrap\"><span class=\"uagb-ss__source-icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\"><path d=\"M389.2 48h70.6L305.6 224.2 487 464H345L233.7 318.6 106.5 464H35.8L200.7 275.5 26.8 48H172.4L272.9 180.9 389.2 48zM364.4 421.8h39.1L151.1 88h-42L364.4 421.8z\"><\/path><\/svg><\/span><\/span><\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-social-share-child uagb-ss-repeater uagb-ss__wrapper uagb-block-1d136f14\"><span class=\"uagb-ss__link\" data-href=\"https:\/\/www.linkedin.com\/shareArticle?url=\" tabindex=\"0\" role=\"button\" aria-label=\"linkedin\"><span class=\"uagb-ss__source-wrap\"><span class=\"uagb-ss__source-icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path d=\"M416 32H31.9C14.3 32 0 46.5 0 64.3v383.4C0 465.5 14.3 480 31.9 480H416c17.6 0 32-14.5 32-32.3V64.3c0-17.8-14.4-32.3-32-32.3zM135.4 416H69V202.2h66.5V416zm-33.2-243c-21.3 0-38.5-17.3-38.5-38.5S80.9 96 102.2 96c21.2 0 38.5 17.3 38.5 38.5 0 21.3-17.2 38.5-38.5 38.5zm282.1 243h-66.4V312c0-24.8-.5-56.7-34.5-56.7-34.6 0-39.9 27-39.9 54.9V416h-66.4V202.2h63.7v29.2h.9c8.9-16.8 30.6-34.5 62.9-34.5 67.2 0 79.7 44.3 79.7 101.9V416z\"><\/path><\/svg><\/span><\/span><\/span><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p>Saudi Arabia is sitting on a water crisis hiding in plain sight. More than two-thirds of the country&#8217;s irrigation water and roughly a third of its drinking water come from underground aquifers \u2014 ancient reserves that are being drained far faster than rainfall can replenish them. At the same time, the country produces 1.6 billion cubic meters of treated wastewater every single year, most of which goes largely unused.<\/p>\n\n\n\n<p>New research presented at the <a href=\"https:\/\/meetingorganizer.copernicus.org\/EGU26\/EGU26-12097.html\" target=\"_blank\" rel=\"noopener noreferrer\">EGU General Assembly 2026<\/a> suggests those two problems may actually solve each other.<\/p>\n\n\n\n<p>Mohammed Benaafi, a research scientist at King Fahd University of Petroleum and Minerals, and his colleagues investigated whether that surplus treated wastewater could be safely injected back into coastal aquifers through a process known as managed aquifer recharge \u2014 essentially using engineered systems to refill underground water supplies with treated water rather than waiting for natural precipitation to do the job.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">A Resource Hiding in Plain Sight<\/h2>\n\n\n\n<p>The scale of the opportunity is striking. According to Benaafi, that 1.6 billion cubic meters of annually underutilized treated wastewater is equivalent to roughly 60% of Saudi Arabia&#8217;s total urban drinking water demand each year. Rather than treating it as waste to be discharged, Benaafi argues it should be viewed through an entirely different lens.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>&#8220;It is a strategic asset that could be utilized for aquifer recharge,&#8221; Benaafi said in a news release.<\/p>\n<\/blockquote>\n\n\n\n<p>The challenge, however, isn&#8217;t simply a matter of pumping wastewater into the ground. The quality of the treated water and the rate at which it is injected both play critical roles in determining whether the approach succeeds or backfires.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What the Lab Experiments Revealed<\/h2>\n\n\n\n<p>To test the concept under realistic conditions, Benaafi and his team conducted laboratory experiments comparing different treatment levels and recharge rates, then measured their effects on water flow through soil and on groundwater quality.<\/p>\n\n\n\n<p>The results revealed a clear and important tradeoff. When lower-quality treated wastewater is injected at high recharge rates, the aquifer clogs more quickly \u2014 meaning the pores and channels that allow water to move through soil and rock become blocked, reducing the system&#8217;s effectiveness over time. But when higher-quality treated wastewater is introduced at lower, more controlled recharge rates, flow is maintained and the impact on groundwater quality is minimized.<\/p>\n\n\n\n<p>In practical terms, the findings suggest that the process works \u2014 but only when it is carefully calibrated. Treatment quality and injection speed aren&#8217;t just technical footnotes; they determine whether an aquifer recharge project becomes a long-term solution or a costly mistake.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why It Matters: Water Stress Is a Global Challenge<\/h2>\n\n\n\n<p>The implications extend well beyond Saudi Arabia&#8217;s borders. Arid and semi-arid regions around the world \u2014 from North Africa and the Middle East to parts of the American Southwest and Central Asia \u2014 face versions of the same dilemma: growing populations and agriculture are depleting groundwater reserves that took thousands of years to accumulate, while treated wastewater is routinely discarded.<\/p>\n\n\n\n<p>The researchers calculate that with optimized treatment and recharge strategies, wastewater reuse could reduce groundwater withdrawals in eastern Saudi Arabia alone by almost a third. That would represent a significant easing of pressure on aquifers that currently have no viable path to natural recovery at current rates of use.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>The use of treated wastewater in managed aquifer recharge &#8220;provides a sustainable solution to reduce the stress on nonrenewable groundwater and mitigate aquifer depletion in arid regions,&#8221; Benaafi added.<\/p>\n<\/blockquote>\n\n\n\n<p>Benaafi&#8217;s framing of treated wastewater as a resource rather than a liability reflects a broader shift in thinking among water scientists and policymakers. As climate change continues to reduce freshwater availability and intensify droughts in already-dry regions, circular approaches to water management \u2014 where treated wastewater is systematically cycled back into supply \u2014 are gaining traction as a matter of necessity, not just preference.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Comes Next<\/h2>\n\n\n\n<p>The research is being presented as a poster session during the EGU General Assembly 2026, taking place May 3\u20138 in Vienna, Austria. <\/p>\n\n\n\n<p>For students studying environmental science, hydrology, civil engineering or public policy, this research represents exactly the kind of systems-level problem-solving that will define careers in the coming decades. Managed aquifer recharge sits at the intersection of water infrastructure, environmental regulation, public health and climate adaptation \u2014 and regions worldwide are increasingly desperate for affordable, scalable answers.<\/p>\n\n\n\n<p>The work underscores a fundamental truth about resource scarcity: sometimes what looks like a waste problem is actually a supply problem in disguise.<\/p>\n\n\n\n<div style=\"height:9px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.egu.eu\/news\/1743\/saudi-arabias-water-problem-has-a-surprising-solution-its-own-wastewater\/\" target=\"_blank\" rel=\"noopener\" title=\"\">European Geosciences Union<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Saudi Arabia loses groundwater faster than nature can replace it \u2014 but a new study suggests the country&#8217;s massive surplus of treated wastewater could help refill depleted aquifers and secure long-term water supplies across one of the world&#8217;s driest regions.<\/p>\n","protected":false},"author":3,"featured_media":36551,"comment_status":"open","ping_status":"open","sticky":false,"template":"single-no-separators","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[11],"tags":[1075,1077,1072,1076,1074,1073,1071],"class_list":["post-36552","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climate-and-environment","tag-arid-regions","tag-egu","tag-groundwater-depletion","tag-king-fahd-university-of-petroleum-and-minerals","tag-managed-aquifer-recharge","tag-wastewater-reuse","tag-water-security"],"acf":[],"aioseo_notices":[],"uagb_featured_image_src":{"full":["https:\/\/www.tun.com\/home\/wp-content\/uploads\/2026\/05\/saudi-arabias-wastewater-could-solve-its-groundwater-crisis.png",1792,1024,false],"thumbnail":["https:\/\/www.tun.com\/home\/wp-content\/uploads\/2026\/05\/saudi-arabias-wastewater-could-solve-its-groundwater-crisis-150x150.png",150,150,true],"medium":["https:\/\/www.tun.com\/home\/wp-content\/uploads\/2026\/05\/saudi-arabias-wastewater-could-solve-its-groundwater-crisis-300x171.png",300,171,true],"medium_large":["https:\/\/www.tun.com\/home\/wp-content\/uploads\/2026\/05\/saudi-arabias-wastewater-could-solve-its-groundwater-crisis-768x439.png",768,439,true],"large":["https:\/\/www.tun.com\/home\/wp-content\/uploads\/2026\/05\/saudi-arabias-wastewater-could-solve-its-groundwater-crisis-1024x585.png",1024,585,true],"1536x1536":["https:\/\/www.tun.com\/home\/wp-content\/uploads\/2026\/05\/saudi-arabias-wastewater-could-solve-its-groundwater-crisis-1536x878.png",1536,878,true],"2048x2048":["https:\/\/www.tun.com\/home\/wp-content\/uploads\/2026\/05\/saudi-arabias-wastewater-could-solve-its-groundwater-crisis.png",1792,1024,false]},"uagb_author_info":{"display_name":"The University Network","author_link":"https:\/\/www.tun.com\/home\/author\/funky_junkie\/"},"uagb_comment_info":0,"uagb_excerpt":"Saudi Arabia loses groundwater faster than nature can replace it \u2014 but a new study suggests the country's massive surplus of treated wastewater could help refill depleted aquifers and secure long-term water supplies across one of the world's driest regions.","_links":{"self":[{"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/posts\/36552","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/comments?post=36552"}],"version-history":[{"count":6,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/posts\/36552\/revisions"}],"predecessor-version":[{"id":36719,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/posts\/36552\/revisions\/36719"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/media\/36551"}],"wp:attachment":[{"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/media?parent=36552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/categories?post=36552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/tags?post=36552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}