EPA already set a Maximum Contaminant Level of 4.0 ppt. That's why they moved most PFAS production to China.
Another issue is that sewage sludge and "biosolids", unknowingly containing PFAS, is/was being used as farm fertilizer, causing some farms to have to be written off for food production. I would expect many more farms in the future to be found with PFAS soil levels exceeding what is safe to produce food with. The only way to find out is to test.
Maine listened to farmers and confronted the PFAS crisis - https://news.ycombinator.com/item?id=47509448 - February 2026 (0 comments)
Maine Is a Warning for America's PFAS Future - https://news.ycombinator.com/item?id=40007582 - April 2024 (0 comments)
Toxic Chemical Contaminant PFAS Found on Maine Farms - https://news.ycombinator.com/item?id=20142212 - June 2019 (1 comment)
> The practice of spreading sludge as a soil amendment has been a common practice in Maine and across the nation for decades. Land application of sludge material occurred long before there was knowledge that it may contain PFAS or the health implications of PFAS.
EPA Fact Sheet: Draft Sewage Sludge Risk Assessment for PFOA and PFOS: Information for Farmers - https://www.epa.gov/system/files/documents/2025-01/fact-shee... - January 2025
EPA Basic Information about Biosolids: https://19january2021snapshot.epa.gov/biosolids/basic-inform...
In drinking water, yes. And the EPA coordinated a "voluntary" phase-out of PFAS in packaging, but it is not enforced.
Is there a limit in food, which is what this petition was about?