Montana tap water quality
PFAS results for 45 Montana water systems from EPA's latest nationwide testing. Enter your address for your own utility's record and a filter recommendation.
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45systems tested
11%had PFAS detected
2over EPA's 4 ppt limit
Highest PFAS levels in Montana
| Water system | Max PFOA (ppt) | Max PFOS (ppt) |
|---|---|---|
| Kalispell Public Works | — | 6.6 |
| Alpine Village WUA | — | 4.1 |
All Montana water systems
- Butte Silverbow Water Dept
- City of Billings
- City of Bozeman
- City of Great Falls
- Co Water Dist of Billings Heights
- Helena Water System
- Kalispell Public Works ⚠
- Missoula Water
- Montana State University Bozeman
- University of Montana
- Alpine Village WUA ⚠
- Anaconda Water Department
- Big Pines Trailer Court
- Big Sky County Water and Sewer Dist 363
- Bigfork County Water and Sewer
- Black Rock Estates Subdivision
- City of Belgrade
- City of Columbia Falls
- City of Dillon
- City of Glendive
- City of Hamilton
- City of Hardin
- City of Havre
- City of Lewistown
- City of Libby
- City of Livingston
- City of Miles City
- City of Polson
- City of Shelby
- City of Sidney
- City of Whitefish
- Culligan Water Conditioning Great Falls
- Flathead County Water and Sewer
- Frenchtown High School
- Laurel Municipal Water System
- Lockwood Water and Sewer District
- Malmstrom Air Force Base
- Montana State University Billings
- Phantom Hills Water System
- River Rock County Water and Sewer Dist
- Rocky Mountain College
- Sun Prairie Village County
- Town of Fairfield
- Town of Pinesdale
- Town of West Yellowstone
Questions
Does Montana tap water have PFAS?
In EPA's UCMR 5 testing, 5 of 45 Montana water systems (11%) had at least one PFAS compound detected, and 2 had PFOA or PFOS above EPA's 4 ppt limit.
What is the best water filter in Montana?
It depends on your utility. Where PFAS is above EPA's limit, reverse osmosis is the most effective option. Where the main concern is lead from home plumbing or chlorine taste, a certified carbon filter is enough. Enter your address to get a match.