Study Reveals 'Forever Chemicals' Persist in Treated Wastewater, Threatening Drinking Water Supplies**

Wed Apr 02 2025 05:51:08 GMT+0300 (Eastern European Summer Time)
Study Reveals 'Forever Chemicals' Persist in Treated Wastewater, Threatening Drinking Water Supplies**

New research indicates that treated wastewater contains significant levels of PFAS chemicals, raising concerns about their impact on public health as reliance on recycled water increases.**


A study from Harvard and NYU highlights the presence of harmful PFAS in treated wastewater, with potential implications for millions relying on contaminated drinking water across the U.S. The findings stress the urgent need for stricter regulations and better treatment methods.**


As global issues like climate change and water scarcity prompt further reliance on treated wastewater, alarming revelations have emerged about the safety of this water source. A collaborative study from researchers at Harvard University and New York University indicates that treated wastewater, a mainstay in the ongoing battle against dwindling fresh water supplies, is laced with potentially harmful "forever chemicals" known as PFAS (per- and polyfluoroalkyl substances).

The research, published in the *Proceedings of the National Academy of Sciences*, meticulously analyzed wastewater samples from across the United States. The results were sobering: elevated levels of PFAS and other organofluorines were found even after wastewater had undergone treatment aimed at making it safe for consumption.

“Many of these chemicals do not break down in the environment, which raises significant health concerns,” noted Bridger Ruyle, the lead researcher from NYU. There exists a troubling association between PFAS exposure and serious health issues, including cancer, making their pervasive presence in drinking water alarming.

One of the striking findings was that the concentration of PFAS increased post-treatment at many wastewater facilities. This is particularly worrisome considering that approximately 50% of drinking water supplies in the country are situated downstream from wastewater treatment plants. The researchers' models indicate that up to 23 million people may already be consuming drinking water that is contaminated with PFAS from treated wastewater.

The implications are broad, affecting not only public health but also agricultural practices, as the sludge generated from wastewater treatment is utilized as fertilizer in farming. Contamination of this sludge with PFAS compounds only complicates the issue further, highlighting the dire need for improved treatment technologies and stricter regulations governing the use of treated wastewater.

“Continued reliance on wastewater reuse amidst climate change and water scarcity requires urgent examination of the contaminants involved in the treatment process,” Ruyle added, underlining the significant risks posed by unregulated chemicals in our water systems.

As the research unfolds in public discussion, stakeholders from various sectors, including environmental activists and policymakers, may push for heightened scrutiny of wastewater treatment practices and a reevaluation of regulatory frameworks surrounding PFAS. The study underlines the critical need to address these contaminants proactively as efforts to recycle and protect vital water resources intensify.

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