Millions may rely on groundwater contaminated with PFAS for drinking water
A USGS study estimates 71 to 95 million people in the U.S. may drink PFAS-contaminated groundwater, highlighting health risks and the need for further monitoring, especially for private well users.
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A recent study by the U.S. Geological Survey (USGS) reveals that between 71 to 95 million people in the contiguous United States may be drinking groundwater contaminated with per- and polyfluoroalkyl substances (PFAS), commonly referred to as "forever chemicals." This research, published in the journal Science, provides the first national estimates of PFAS presence in untreated groundwater that supplies both public and private wells. The findings indicate that PFAS contamination is widespread, with significant implications for public health, as exposure to these chemicals is linked to various health risks. The study utilized a predictive model based on 1,238 groundwater samples and identified factors such as urban development and well depth that influence PFAS occurrence. An interactive online map has been created to help the public and regulators assess contamination risks. The EPA has set maximum contaminant levels for certain PFAS, but many private well users may lack access to testing and treatment resources. States with the highest populations relying on potentially contaminated groundwater include Florida, California, Michigan, and North Carolina. The study emphasizes the need for further sampling and monitoring to protect public health, particularly for those using private wells.
- An estimated 71 to 95 million people in the U.S. may rely on PFAS-contaminated groundwater for drinking.
- The USGS study is the first to provide national estimates of PFAS in untreated groundwater.
- PFAS exposure is associated with various health risks, prompting regulatory attention.
- The study includes an interactive map for assessing PFAS contamination risks.
- States with significant populations relying on contaminated groundwater include Florida and California.
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8 commentsFor example, many large cities (San Francisco, Seattle, Portland) either do not use groundwater sources from within city limits, or only use it as a secondary source. Unless you use a private well, this map is therefore not super useful for understanding whether PFAS contamination of tap water should be a concern for you. The map likewise doesn't take into account water treatment or filtering.
I maintain a DB of drinking water contaminants in the US[1]. You can look up your city's system to see if they test for PFAS.
Afaik, very little is still understood about the actual risks from a particular PFAS exposure level. Right?
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High Levels of PFAS 'Forever Chemicals' Found in Food and Drink Products – Study
A study on Science Direct found high PFAS levels in food like white rice, eggs, red meat, seafood, and coffee. PFAS in blood and breast milk pose health risks. Dietary changes are advised to reduce exposure. US and EU regulate PFAS in food packaging.
PFAS widely added to US pesticides despite EPA denial, study finds
A study found toxic PFAS chemicals in US pesticides, contradicting EPA claims. PFAS levels doubled in a decade, linked to health risks. EPA accused of hiding data. Actual PFAS presence may exceed reported levels. Companies not required to disclose PFAS use. EPA silent on findings.
What's the deal with PFAS, a.k.a. 'forever chemicals'?
PFAS, known as "forever chemicals," pose serious health risks and persist in the environment. The EPA has set new drinking water limits, while experts call for stronger regulations and consumer awareness.
It Could Take over 40 Years for PFAS to Leave Groundwater
A study from North Carolina State University reveals PFAS may take over 40 years to dissipate from groundwater, affecting over 7,000 private wells and exceeding EPA contaminant levels.
Forever Chemicals found in bottled and tap water from around the world
A study found PFAS, or "Forever Chemicals," in drinking water worldwide, with over 99% of bottled samples containing them. Simple treatments can reduce PFAS levels, highlighting the need for regulation.