What was found in Whitefish's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 60 µg/L 0.6% of the EPA limit 10000 µg/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2019
Highest in the city: 1162 µg/L — ALPINE VILLAGE WUA · 125 people · 2019 | 16/20 | SYR4 |
| Nitrate | 60 µg/L 0.6% of the EPA limit 10000 µg/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2015
Highest in the city: 1150 µg/L — ALPINE VILLAGE WUA · 125 people · 2019 | 16/20 | SYR4 |
| Copper | 675 µg/L 52% of the EPA limit 1300 µg/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2019 | 17/20 | SYR4 |
| Barium | 120 µg/L 6% of the EPA limit 2000 µg/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2015
Highest in the city: 546 µg/L — BIG MOUNTAIN WATER COMPANY · 2,435 people · 2019 | 16/20 | SYR4 |
| Fluoride | 29 µg/L 0.7% of the EPA limit 4000 µg/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2015
Highest in the city: 336 µg/L — FOREST ACRES TR PK WHITEFISH · 390 people · 2019 | 17/20 | SYR4 |
| Total Haloacetic Acids (HAA5) | 56.4 µg/L 94% of the EPA limit 60 µg/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2019 | 3/20 | SYR4 |
| TTHM | 43 µg/L 54% of the EPA limit 80 µg/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2019 | 4/20 | SYR4 |
| Chloroform | 42 µg/L No EPA limit set Main supplier: WHITEFISH CITY OF · 10,418 people · 2019 | 4/20 | SYR4 |
| Trichloroacetic Acid | 30 µg/L No EPA limit set Main supplier: WHITEFISH CITY OF · 10,418 people · 2019 | 1/20 | SYR4 |
| Dichloroacetic Acid | 24.8 µg/L No EPA limit set Main supplier: WHITEFISH CITY OF · 10,418 people · 2019 | 3/20 | SYR4 |
| Combined Uranium | 23.215 µg/L 77% of the EPA limit 30 µg/L Highest in the city: BIG MOUNTAIN WATER COMPANY · 2,435 people · 2019 | 11/20 | SYR4 |
| Gross Alpha, Excl. Radon And U | 12.9025 pCi/L 86% of the EPA limit 15 pCi/L Highest in the city: FLATHEAD CO WATER DISTRICT NO 8 · 475 people · 2019 | 13/20 | SYR4 |
| Lead | 6.95 µg/L 46% of the EPA limit 15 µg/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2019
Highest in the city: 11.3 µg/L — FLATHEAD CO WATER DISTRICT NO 8 · 475 people · 2019 | 15/20 | SYR4 |
| Selenium | 5 µg/L 10% of the EPA limit 50 µg/L Highest in the city: BIG MOUNTAIN WATER COMPANY · 2,435 people · 2019 | 1/20 | SYR4 |
| Arsenic | 4.85 µg/L 49% of the EPA limit 10 µg/L Highest in the city: BIG MOUNTAIN WATER COMPANY · 2,435 people · 2018 | 4/20 | SYR4 |
| Monochloroacetic Acid | 3.68 µg/L No EPA limit set Main supplier: WHITEFISH CITY OF · 10,418 people · 2019 | 1/20 | SYR4 |
| Gross Beta Particle Activity | 3.5 pCi/L No EPA limit set Highest in the city: BIG MOUNTAIN WATER COMPANY · 2,435 people · 2016 | 1/20 | SYR4 |
| Combined Radium (-226 And -228) | 1.6 pCi/L 32% of the EPA limit 5 pCi/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2017
Highest in the city: 3.45 pCi/L — BIG MOUNTAIN WATER COMPANY · 2,435 people · 2019 | 7/20 | SYR4 |
| Bromodichloromethane | 2.085 µg/L No EPA limit set Main supplier: WHITEFISH CITY OF · 10,418 people · 2019
Highest in the city: 2.5 µg/L — FOREST ACRES TR PK WHITEFISH · 390 people · 2019 | 4/20 | SYR4 |
| Antimony, Total | 2 µg/L 33% of the EPA limit 6 µg/L Highest in the city: BIG MOUNTAIN WATER COMPANY · 2,435 people · 2019 | 1/20 | SYR4 |
| Dibromochloromethane | 1.875 µg/L No EPA limit set Highest in the city: WHITEFISH HILLS VILLAGE · 50 people · 2019 | 3/20 | SYR4 |
| Bromoform | 0.6795 µg/L No EPA limit set Highest in the city: WHITEFISH HILLS VILLAGE · 50 people · 2019 | 1/20 | SYR4 |
| Dibromoacetic Acid | 0.4700 µg/L No EPA limit set Highest in the city: WHITEFISH HILLS VILLAGE · 50 people · 2019 | 2/20 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: WHITEFISH CITY OF · 10,418 people · 2025
Highest in the city: 0.0660 mg/L — ALPINE VILLAGE WUA · 125 people · 2025 | 20/20 | LCR |
| PFOS | 0.0041 µg/L No EPA limit set Highest in the city: ALPINE VILLAGE WUA · 125 people · 2025 | 1/20 | UCMR-5 |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Whitefish
Frequently asked questions about Whitefish tap water
Is Whitefish tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Whitefish. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Whitefish?
20 public water suppliers report drinking-water monitoring for Whitefish, Montana to the EPA. Each is listed above with its population served.
What contaminants are in Whitefish's water?
The contaminants EPA monitoring detected in Whitefish include Nitrate-Nitrite, Nitrate, Copper, Barium, Fluoride. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.