PFAS in Idaho Water
Based on EPA UCMR 5 testing of 41 public water systems in Idaho.
See Idaho on the national heatmap41
Systems Tested
41
With PFAS Detected
3
Above EPA Limits
7%
Exceed MCL
Most Commonly Detected PFAS in Idaho
Systems with detections · EPA UCMR 5 (2023–2025)
lithium 39 systems
PFPeA 6 systems
PFHxA 6 systems
PFBS 5 systems
PFHxS 4 systems
PFOS 3 systems
Check your Idaho ZIP code
Get specific results for your neighborhood's water utility.
Water Systems in Idaho (41)
| Water System ↕ | PWSID | PFAS Detected ↕ | Above MCL ↕ | Risk |
|---|---|---|---|---|
| CAPITOL WATER CORP Groundwater | ID4010022 | 8 | 3 | High Risk |
| GARDEN CITY WATER AND SEWER SYSTEM Groundwater | ID4010066 | 8 | 2 | High Risk |
| MERIDIAN WATER DEPT Groundwater | ID4010097 | 3 | 1 | High Risk |
| LEWISTON CITY OF Groundwater | ID2350014 | 4 | 0 | Low Level |
| MOUNTAIN HOME AIR FORCE BASE Groundwater | ID4200054 | 4 | 0 | Low Level |
| PAYETTE CITY OF Groundwater | ID3380009 | 3 | 0 | Low Level |
| RATHDRUM CITY OF Groundwater | ID1280152 | 2 | 0 | Low Level |
| SHELLEY CITY OF Groundwater | ID6060071 | 2 | 0 | Low Level |
| GRANGEVILLE WATER DEPT Groundwater | ID2250023 | 1 | 0 | Low Level |
| KOOSKIA WATER DEPT Groundwater | ID2250032 | 1 | 0 | Low Level |
| POTLATCH CITY OF Groundwater | ID2290030 | 1 | 0 | Low Level |
| LEWISTON ORCHARDS IRRIGATION DIST Groundwater | ID2350015 | 1 | 0 | Low Level |
| CALDWELL CITY OF Groundwater | ID3140013 | 1 | 0 | Low Level |
| MIDDLETON CITY OF Groundwater | ID3140074 | 1 | 0 | Low Level |
| NAMPA CITY OF Groundwater | ID3140080 | 1 | 0 | Low Level |
| EMMETT CITY OF Groundwater | ID3230012 | 1 | 0 | Low Level |
| WEISER CITY OF Surface Water | ID3440011 | 1 | 0 | Low Level |
| Veolia Water ID Groundwater | ID4010016 | 1 | 0 | Low Level |
| Veolia Eagle Groundwater | ID4010049 | 1 | 0 | Low Level |
| KUNA CITY OF Groundwater | ID4010085 | 1 | 0 | Low Level |
| EAGLE, CITY OF (EASTERN ZONE) Groundwater | ID4010201 | 1 | 0 | Low Level |
| STAR SEWER AND WATER DIST WATER SYSTEM Groundwater | ID4010220 | 1 | 0 | Low Level |
| EAGLE, CITY OF (WESTERN ZONE) Groundwater | ID4010222 | 1 | 0 | Low Level |
| KETCHUM CITY OF Groundwater | ID5070028 | 1 | 0 | Low Level |
| BURLEY WATER DEPT Groundwater | ID5160008 | 1 | 0 | Low Level |
| JEROME CITY OF Groundwater | ID5270011 | 1 | 0 | Low Level |
| HEYBURN CITY OF Groundwater | ID5340006 | 1 | 0 | Low Level |
| RUPERT CITY OF Groundwater | ID5340017 | 1 | 0 | Low Level |
| BUHL CITY OF Groundwater | ID5420007 | 1 | 0 | Low Level |
| TWIN FALLS CITY OF Groundwater | ID5420058 | 1 | 0 | Low Level |
| CHUBBUCK CITY OF Groundwater | ID6030008 | 1 | 0 | Low Level |
| POCATELLO CITY OF Groundwater | ID6030043 | 1 | 0 | Low Level |
| BLACKFOOT CITY OF Groundwater | ID6060007 | 1 | 0 | Low Level |
| MORELAND COUNTRY COURT Groundwater | ID6060049 | 1 | 0 | Low Level |
| AMERICAN FALLS CITY OF Groundwater | ID6390001 | 1 | 0 | Low Level |
| AMMON CITY OF Groundwater | ID7100004 | 1 | 0 | Low Level |
| FALLS WATER COMPANY INC Groundwater | ID7100030 | 1 | 0 | Low Level |
| IDAHO FALLS CITY OF Groundwater | ID7100039 | 1 | 0 | Low Level |
| ST ANTHONY Groundwater | ID7220067 | 1 | 0 | Low Level |
| RIGBY CITY OF Groundwater | ID7260032 | 1 | 0 | Low Level |
| REXBURG CITY OF Groundwater | ID7330022 | 1 | 0 | Low Level |
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