PFAS detected in Alabama water systems

EPA UCMR 5 monitoring (2023–2025) detected PFOA or PFOS at or above 6 parts per trillion in these 34 large Alabama public water systems, each serving more than 10,000 people. Select a system to see exactly what was detected and the certified filters that reduce it.

Alabama systems, highest detections first

Water system PFOA (ppt) PFOS (ppt) vs. 4 ppt reference
Irondale Water System 5.1 59.4 14.8×
Gadsden Water Works and Sewer Board 32 32.4 8.1×
Grand Bay Water Works Board 31.4 26.9 7.8×
Colbert County Rural Water System 19.8 29.5 7.4×
Clanton Water Department 26 28 7×
Shelby County Water System 26.1 27.7 6.9×
Prattville (Water Works Board of) 19.2 22.8 5.7×
Alabaster Water Board 21 19 5.3×
Sheffield Utilities Department 13 20 5×
Tri Community Water System 19 19 4.8×
Florence Water-Wastewater Department 9.7 17 4.3×
West Lauderdale Co Water & FPA 13 17 4.3×
Muscle Shoals Utility Board 9.6 16.8 4.2×
Loachapoka Water Authority 16 — 4×
Fairhope Water System (City of) 5.7 15 3.8×
Pell City Water Works 15 5.5 3.8×
Southside Water Works 14 8.1 3.5×
Auburn Water Works 12 — 3×
Saraland Water Service 4.5 12 3×
Northeast Alabama Water System 11.9 5.6 3×
Pelham Water Works 11.6 5.6 2.9×
Limestone County Water System 8.7 11.1 2.8×
Albertville Utilities Board 11 4.8 2.8×
North Baldwin Utilities — 11 2.8×
Opelika Utilities 11 6.4 2.8×
Boaz Water & Sewer Board 10 4.6 2.5×
Huntsville Utilities 4.7 9 2.3×
Phenix City Utilities 7.5 6.8 1.9×
Helena Utility Board 4 7 1.8×
Guntersville Water Works & Sewer Board 6.8 4.8 1.7×
Smiths Water and Sewer Authority 5.9 6.3 1.6×
Tuscumbia Water Works 5 6.3 1.6×
Jackson Water Works & Sewer Board — 6.2 1.6×
Oxford Water Works & Sewer Board — 6.1 1.5×

Highest single EPA UCMR 5 detections (2023–2025), in parts per trillion. The last column is the multiple of the 4 ppt federal reference level for PFOA/PFOS — shown as context only, not a compliance or health determination. — means the compound was not detected at or above 6 ppt.

Not sure what's in your own water? Test it first, then run the selector for a recommendation matched to your home, or read what PFAS is and how it's removed.