EPA Keeps PFAS Limits but Pushes Compliance Deadline to 2031 : What It Means for Your Water
Water systems get two extra years to meet forever chemical standards. Here's what that means for the water coming out of your tap right now.
Updated February 13, 2026
The EPA confirmed it will keep the nation's first-ever PFAS drinking water limits in place - 4 parts per trillion for PFOA and PFOS - but plans to give water systems until 2031 to comply, two years beyond the original 2029 deadline.
What Changed
In April 2024, the EPA finalized national drinking water standards for six PFAS compounds. The rule was historic - the first time the federal government set legally enforceable limits on forever chemicals in tap water. Water systems were originally given until 2029 to meet the new standards.
Now the EPA is extending that compliance window, citing the need for water systems - especially small and rural ones - to develop plans and secure funding for treatment upgrades. A proposed rule for the extension is expected in fall 2026, with a final rule by spring 2027.
The Numbers That Matter
- 4 ppt - Maximum allowed level for PFOA and PFOS individually
- 10 ppt - Maximum for PFHxS, PFNA, and HFPO-DA individually
- 2027 - Deadline for water systems to complete initial PFAS monitoring
- 2031 - New proposed deadline for full compliance (was 2029)
What This Means for You Right Now
If your city's water shows PFAS above 4 ppt on CheckMyTap, that contamination is real and present today. The compliance deadline only affects when your water utility is legally required to fix it. Many larger utilities are already taking action, but smaller systems may wait until closer to the deadline.
In practical terms: if your water has PFAS, you shouldn't wait until 2031 for your utility to act. A point-of-use filter certified to NSF P473 or a reverse osmosis system can reduce PFAS in your drinking water now.
Don't Wait Until 2031 - Filter Your Water Now
Affiliate disclosure: we may earn a commission. Products selected based on NSF certifications for PFAS removal.
Which Cities Are Affected?
Based on CheckMyTap's analysis of EPA data, hundreds of cities in our database have PFAS levels above the new 4 ppt standard. Some of the largest affected metros include Phoenix, Tampa, Philadelphia, and parts of the Dallas-Fort Worth area. Search your city to check your local PFAS data.
The Politics
EPA Administrator Lee Zeldin stated the agency is committed to addressing PFAS while providing "common-sense flexibility" for water systems. The extension is paired with a new PFAS OUTreach Initiative targeting small and rural communities, and a federal exemption framework for systems that need more time.
Environmental groups have criticized the delay, arguing that every year of inaction exposes millions to known carcinogens. Supporters counter that without adequate time and funding, many small water systems simply cannot afford the necessary treatment upgrades.
Related: Worried about microplastics too? Read our investigation into microplastics in drinking water, including which filters are NSF 401 certified for microplastic removal.