What is PFAS?
Water suppliers
PFAS value per supplier, 2023–2025. EPA limit — 4 ppt (0.004 µg/L) for PFOA and PFOS, set in 2024. Suppliers that detected PFOA or PFOS
are highlighted and listed first. “Not detected” means the contaminant was measured but
not found.
| Supplier | City | Population | PFAS (ug/L) |
|---|---|---|---|
| Garden City Water and Sewer System | Garden City | 12,500 | 0.0282 µg/L |
| Capitol Water Corp | Boise | 9,000 | 0.0098 µg/L |
| Meridian Water Dept | Meridian | 147,340 | 0.0049 µg/L |
| Veolia Water Idaho | Boise | 264,978 | Not detected |
| Nampa City of | Nampa | 100,200 | Not detected |
| Caldwell City of | Caldwell | 74,000 | Not detected |
| Idaho Falls City of | Idaho Falls | 69,450 | Not detected |
| Pocatello City of | Pocatello | 58,231 | Not detected |
| Twin Falls City of | Twin Falls | 56,121 | Not detected |
| Coeur D Alene City of | Coeur D Alene | 54,115 | Not detected |
| Rexburg City of | Rexburg | 40,695 | Not detected |
| Kuna City of | Kuna | 32,038 | Not detected |
| Moscow Water Dept | Moscow | 26,000 | Not detected |
| Falls Water Company Inc | Idaho Falls | 22,650 | Not detected |
| Post Falls City of | — | 20,285 | Not detected |
| Lewiston Orchards Irrigation Dist | Lewiston | 20,000 | Not detected |
| Ammon City of | Ammon | 17,338 | Not detected |
| Chubbuck City of | Chubbuck | 15,842 | Not detected |
| Lewiston City of | Lewiston | 15,001 | Not detected |
| Mountain Home, City of | Mountain Home | 14,651 | Not detected |
| Star Sewer and Water Dist Water System | Star | 14,000 | Not detected |
| Blackfoot City of | Blackfoot | 13,224 | Not detected |
| Middleton City of | Middleton | 13,190 | Not detected |
| Jerome City of | Jerome | 13,135 | Not detected |
| Sandpoint Public Works Dept | Sandpoint | 12,284 | Not detected |
| East Greenacres Irrigation Dist | — | 11,165 | Not detected |
| Rathdrum City of | Rathdrum | 10,358 | Not detected |
| Burley Water Dept | Burley | 10,345 | Not detected |
| Hayden Lake Irrigation Dist | Hayden | 9,375 | Not detected |
| Ross Point Water Dist | — | 8,965 | Not detected |
| Avondale Irrigation Dist | Hayden | 8,785 | Not detected |
| University of Idaho | Moscow | 8,589 | Not detected |
| Payette City of | Payette | 8,127 | Not detected |
| Hailey Water and Sewer | Hailey | 8,000 | Not detected |
| Mountain Home Air Force Base | Mountain Home Afb | 7,500 | Not detected |
| Fruitland City of | Fruitland | 7,458 | Not detected |
| Emmett City of | Emmett | 6,700 | Not detected |
| Eagle, City of (Western Zone) | Eagle | 6,108 | Not detected |
| Central Shoshone County Water Dist | Kellogg | 6,098 | Not detected |
| Rupert City of | Rupert | 5,796 | Not detected |
| Weiser City of | Weiser | 5,630 | Not detected |
| Preston City of | Preston | 5,591 | Not detected |
| Rigby City of | Rigby | 5,400 | Not detected |
| Hyde Park City Water System | — | 5,200 | Not detected |
| American Falls City of | American Falls | 4,863 | Not detected |
| Buhl City of | Buhl | 4,518 | Not detected |
| Mccall City of | — | 4,423 | Not detected |
| Shelley City of | Shelley | 4,409 | Not detected |
| Gooding City of | Gooding | 3,706 | Not detected |
| Eagle, City of (Eastern Zone) | Eagle | 3,702 | Not detected |
| St Anthony | St Anthony | 3,606 | Not detected |
| Ketchum City of | Ketchum | 3,555 | Not detected |
| Sun Valley Water and Sewer Dist | Sun Valley | 3,400 | Not detected |
| Grangeville Water Dept | Grangeville | 3,151 | Not detected |
| Heyburn City of | Heyburn | 3,000 | Not detected |
| Fort Hall | Fort Hall | 2,850 | Not detected |
| Potlatch City of | Potlatch | 812 | Not detected |
| Kooskia Water Dept | Kooskia | 607 | Not detected |
| Pierce City of | Pierce | 467 | Not detected |
| Cougar Bay Water Association | Coeur D'Alene | 230 | Not detected |
| Kaniksu Shores Estates | Sandpoint | 93 | Not detected |
| Moreland Country Court | — | 60 | Not detected |