PFAS in Idaho drinking water
62 community water systems tested
4.8%
of tested systems detected PFOA or PFOS
(3/62)
(3/62)
Water systems
PFAS value per system, 2023–2025. EPA limit — 4 ppt (0.004 µg/L) for PFOA and PFOS, set in 2024. Systems that detected PFOA or PFOS
are highlighted and listed first. “Not detected” means the contaminant was measured but
not found.
| System | City | Population | PFAS (ug/L) |
|---|---|---|---|
| GARDEN CITY WATER AND SEWER SYSTEM | 12,500 | 0.0282 ug/L | |
| CAPITOL WATER CORP | 9,000 | 0.0098 ug/L | |
| MERIDIAN WATER DEPT | 147,340 | 0.0049 ug/L | |
| VEOLIA WATER IDAHO | 264,978 | Not detected | |
| NAMPA CITY OF | 100,200 | Not detected | |
| CALDWELL CITY OF | 74,000 | Not detected | |
| IDAHO FALLS CITY OF | 69,450 | Not detected | |
| POCATELLO CITY OF | POCATELLO | 58,231 | Not detected |
| TWIN FALLS CITY OF | 56,121 | Not detected | |
| COEUR D ALENE CITY OF | 54,115 | Not detected | |
| REXBURG CITY OF | 40,695 | Not detected | |
| KUNA CITY OF | 32,038 | Not detected | |
| MOSCOW WATER DEPT | 26,000 | Not detected | |
| FALLS WATER COMPANY INC | 22,650 | Not detected | |
| POST FALLS CITY OF | 20,285 | Not detected | |
| LEWISTON ORCHARDS IRRIGATION DIST | 20,000 | Not detected | |
| AMMON CITY OF | 17,338 | Not detected | |
| CHUBBUCK CITY OF | 15,842 | Not detected | |
| LEWISTON CITY OF | 15,001 | Not detected | |
| MOUNTAIN HOME, CITY OF | 14,651 | Not detected | |
| STAR SEWER AND WATER DIST WATER SYSTEM | 14,000 | Not detected | |
| BLACKFOOT CITY OF | 13,224 | Not detected | |
| MIDDLETON CITY OF | 13,190 | Not detected | |
| JEROME CITY OF | 13,135 | Not detected | |
| SANDPOINT PUBLIC WORKS DEPT | 12,284 | Not detected | |
| EAST GREENACRES IRRIGATION DIST | 11,165 | Not detected | |
| RATHDRUM CITY OF | 10,358 | Not detected | |
| BURLEY WATER DEPT | 10,345 | Not detected | |
| HAYDEN LAKE IRRIGATION DIST | 9,375 | Not detected | |
| ROSS POINT WATER DIST | 8,965 | Not detected | |
| AVONDALE IRRIGATION DIST | 8,785 | Not detected | |
| UNIVERSITY OF IDAHO | 8,589 | Not detected | |
| PAYETTE CITY OF | 8,127 | Not detected | |
| HAILEY WATER AND SEWER | 8,000 | Not detected | |
| MOUNTAIN HOME AIR FORCE BASE | 7,500 | Not detected | |
| FRUITLAND CITY OF | 7,458 | Not detected | |
| EMMETT CITY OF | 6,700 | Not detected | |
| EAGLE, CITY OF (WESTERN ZONE) | 6,108 | Not detected | |
| CENTRAL SHOSHONE COUNTY WATER DIST | 6,098 | Not detected | |
| RUPERT CITY OF | 5,796 | Not detected | |
| WEISER CITY OF | 5,630 | Not detected | |
| PRESTON CITY OF | 5,591 | Not detected | |
| RIGBY CITY OF | 5,400 | Not detected | |
| HYDE PARK CITY WATER SYSTEM | 5,200 | Not detected | |
| AMERICAN FALLS CITY OF | 4,863 | Not detected | |
| BUHL CITY OF | 4,518 | Not detected | |
| MCCALL CITY OF | 4,423 | Not detected | |
| SHELLEY CITY OF | 4,409 | Not detected | |
| GOODING CITY OF | 3,706 | Not detected | |
| EAGLE, CITY OF (EASTERN ZONE) | 3,702 | Not detected | |
| ST ANTHONY | 3,606 | Not detected | |
| KETCHUM CITY OF | 3,555 | Not detected | |
| SUN VALLEY WATER AND SEWER DIST | 3,400 | Not detected | |
| GRANGEVILLE WATER DEPT | 3,151 | Not detected | |
| HEYBURN CITY OF | 3,000 | Not detected | |
| FORT HALL | FORT HALL | 2,850 | Not detected |
| POTLATCH CITY OF | 812 | Not detected | |
| KOOSKIA WATER DEPT | 607 | Not detected | |
| PIERCE CITY OF | 467 | Not detected | |
| COUGAR BAY WATER ASSOCIATION | 230 | Not detected | |
| KANIKSU SHORES ESTATES | 93 | Not detected | |
| MORELAND COUNTRY COURT | 60 | Not detected |