EPA data, plain English
Is your tap water what the utility says?
Find your water utility. See what EPA's 2023–2025 PFAS testing and violation records show, and which filters fit, with the limits of both said out loud.
What the data shows
Of the 8,990 community water systems serving 3,300+ people with complete PFAS testing, 1,053 (11.7%) averaged above at least one of the 2024 federal PFAS levels at one or more sampling points. That is a screening result, not a finding of non-compliance. How it is computed.
The biggest utilities
New York City SystemNo PFAS were detected at New York City System above EPA's reporting levels in the 2023–2025 survey.Los Angeles-City, dept. of Water & PowerNo PFAS were detected at Los Angeles-City, dept. of Water & Power above EPA's reporting levels in the 2023–2025 survey.City of HoustonPFAS were detected at City of Houston, but every regulated compound averaged under its limit.ChicagoNo PFAS were detected at Chicago above EPA's reporting levels in the 2023–2025 survey.San Antonio Water SystemPFAS were detected at San Antonio Water System, but every regulated compound averaged under its limit.MDWASA - Main SystemAt least one sampling point at MDWASA - Main System averaged above the 4 ppt federal limit: PFOA up to 12 ppt and PFOS up to 31 ppt.Washington Suburban Sanitary CommissionPFAS were detected at Washington Suburban Sanitary Commission, but every regulated compound averaged under its limit.Phoenix City ofPFAS were detected at Phoenix City of, but every regulated compound averaged under its limit.