DNR, DHS Respond To EPA’s Announcement Of Maximum Contaminant Levels For PFAS In Drinking Water

The EPA’s enforceable standards acknowledge the importance of limiting exposure to PFAS in total and the role that drinking contaminated water plays in the potential for negative health impacts from PFAS.   

“Overall, Wisconsin’s public water systems are well positioned to comply with the EPA’s enforceable standards,” said Steve Elmore, Director of the DNR’s Bureau of Drinking Water and Groundwater. “The DNR set enforceable standards for two types of PFAS in public drinking water in 2022. Over the last year, public water systems throughout Wisconsin have sampled at least once for these and other PFAS.”   

The current enforceable standard of 70 ppt for PFOA and PFOS in public drinking water will remain in effect until the DNR completes rulemaking to comply with the EPA’s drinking water standards. This may take up to three years to complete based on Wisconsin’s statutory requirements. 

Additionally, the DNR will formally request that the Wisconsin Department of Health Services (DHS) update their health-based recommendations for the six PFAS included in EPA’s finalized MCLs to account for new scientific findings. Wisconsin DHS anticipates their updated recommendations will be available during the second half of 2024.    

“DHS is committed to protecting Wisconsinites from exposure to PFAS, including diligently reviewing the new scientific information available from EPA,” said Kirsten Johnson, DHS Secretary-Designee. “The good news is there are steps people can take right now to reduce their exposure to PFAS in drinking water and other sources.”

While this rulemaking process is underway, the DNR will also work with PFAS-impacted public water systems on potential actions to reduce contamination in water provided to the community.   

Of Wisconsin’s nearly 2,000 public water systems, approximately 95% have PFAS levels below the EPA’s standards. Sampling results for municipal public drinking water systems are available to view in the PFAS Interactive Data Viewer.   

The specific actions taken by any public water system will depend on their circumstances and could include treating water to remove PFAS or finding a different water source. These MCLs do not apply to drinking water from private wells.

Funding from the federal Bipartisan Infrastructure Law may be available to municipal public water systems to take corrective actions against PFAS. 

PFAS are a group of human-made chemicals used for decades in numerous products, including non-stick cookware, fast food wrappers, stain-resistant sprays and certain types of firefighting foam.  

These contaminants have made their way into the environment in a variety of ways, including spills of PFAS-containing materials, discharges of wastewater that contain PFAS from treatment plants and use of certain types of firefighting foams. PFAS are known to accumulate in fish and wildlife tissues as well as in the human body, posing several risks to human health. 

You can find more information about actions to take to reduce your exposure to PFAS on the DHS website. 

More about the PFAS Problem

• Gov. Evers Delivers Radio Address, Celebrates Release of Over $125 Million to Fight Pfas Statewide - Gov. Tony Evers - Apr 10th, 2026
• Wisconsin Conservation Voters Celebrates Double Win - Wisconsin Conservation Voters - Apr 8th, 2026
• Gov. Evers Signs Bills Releasing Funds to Combat PFAS Pollution - Baylor Spears - Apr 7th, 2026
• Wisconsin Conservation Voters Applauds Gov. Evers for Signing Historic PFAS Funding Bill - Wisconsin Conservation Voters - Apr 6th, 2026
• $80 Million In PFAS Grants Could Start Flowing This Fall - Danielle Kaeding - Mar 26th, 2026
• Wisconsin Conservation Voters Celebrates Historic $132 Million Pfas Victory - Wisconsin Conservation Voters - Mar 18th, 2026
• After Years of Delay, WI Legislature Passes Bills Addressing PFAS - Danielle Kaeding - Mar 17th, 2026
• Gov. Evers Celebrates Senate Approval of Bipartisan Pfas Compromise After Years of Urging Republicans to Release $125 Million to Fight Pfas Contamination Statewide - Gov. Tony Evers - Mar 17th, 2026
• Gov. Evers Signs New PFAS, Lead Regulations - Danielle Kaeding - Mar 2nd, 2026
• Gov. Evers Builds Upon Efforts to Clean Up Wisconsinites Water, Approves New Rule Changes Strengthening Pfas Drinking Water Standards - Gov. Tony Evers - Mar 2nd, 2026

Read more about PFAS Problem here

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