Millions in the US May Rely on Groundwater Contaminated with PFAS for Drinking Water Supplies
By: United States Geological Survey
October 24, 2024
A recent U.S. Geological Survey (USGS) study has revealed that 71 to 95 million Americans could be relying on groundwater contaminated with per- and polyfluoroalkyl substances (PFAS) for their drinking water. Often referred to as "forever chemicals," PFAS are synthetic compounds resistant to degradation, commonly found in products like non-stick cookware and firefighting foams. The study used a predictive model analyzing factors like well depth and urbanization, helping identify areas with higher contamination probabilities, especially relevant for private well users who might lack regular water testing access.
Principal aquifers of the United States and groundwater sample locations analyzed for per- and polyfluoroalkyl substances (PFAS). Credit: Science (2024).DOI:10.1126/science.ado6638
PFAS contamination varies by location. For instance, in Massachusetts, 86-98% of groundwater used for public drinking may contain PFAS, while in states like Michigan and North Carolina, private wells are likely affected. While current federal regulations cover only certain PFAS types, state-specific guidelines also apply. Health risks from PFAS exposure, including potential links to certain cancers and developmental issues, underscore the need for public awareness and access to testing and treatment options.
Groundwater is a critical drinking water source, especially for rural communities that may lack access to regular water quality testing. The study calls for increased attention to PFAS pollution and suggests that existing groundwater treatment systems may be insufficient to filter out these contaminants. As PFAS levels continue to rise in many regions, the articles emphasize the need for urgent policy interventions and more comprehensive water monitoring programs to address this invisible yet pervasive threat to public health.
For more details, you can read the full articles on Phys.org and USGS.
