What was found in Kalispell'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 | 2484 µg/L 25% of the EPA limit 10000 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 10400 µg/L — SWAN RIDGE HOA · 28 people · 2019 | 52/83 | SYR4 |
| Nitrate-Nitrite | 2502 µg/L 25% of the EPA limit 10000 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 9815 µg/L — SWAN RIDGE HOA · 28 people · 2019 | 69/83 | SYR4 |
| Fluoride | 216 µg/L 5.4% of the EPA limit 4000 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 1753 µg/L — EAGLE RIDGE ESTATES CO W AND S DIST · 115 people · 2017 | 63/83 | SYR4 |
| Barium | 140 µg/L 7% of the EPA limit 2000 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 706 µg/L — FOX HILL ESTATES · 163 people · 2017 | 64/83 | SYR4 |
| Copper | 142 µg/L 11% of the EPA limit 1300 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2017
Highest in the city: 571 µg/L — FOYS LAKESIDE ESTATES WATER & SEWER DIST · 36 people · 2018 | 79/83 | SYR4 |
| Nitrite | 550 µg/L 55% of the EPA limit 1000 µg/L Highest in the city: STILLWATER ESTATES COUNTY W AND S DIST · 130 people · 2017 | 4/83 | SYR4 |
| Oxamyl | 200 µg/L 100% of the EPA limit 200 µg/L Highest in the city: FLATHEAD COUNTY WATER AND SEWER · 7,775 people · 2018 | 1/83 | SYR4 |
| Carbofuran | 40 µg/L 100% of the EPA limit 40 µg/L Highest in the city: FLATHEAD COUNTY WATER AND SEWER · 7,775 people · 2018 | 1/83 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.525 pCi/L 24% of the EPA limit 15 pCi/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2017
Highest in the city: 22 pCi/L — EAGLE RIDGE ESTATES CO W AND S DIST · 115 people · 2017 | 46/83 | SYR4 |
| Combined Uranium | 3.55 µg/L 12% of the EPA limit 30 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2017
Highest in the city: 19.55 µg/L — STONERIDGE HOME OWNERS ASSOCIATION · 95 people · 2019 | 47/83 | SYR4 |
| Lead | 8 µg/L 53% of the EPA limit 15 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2017
Highest in the city: 18.5 µg/L — MOUNTAIN VILLA APTS KALISPELL · 300 people · 2019 | 70/83 | SYR4 |
| TTHM | 2.75 µg/L 3.4% of the EPA limit 80 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 18.5 µg/L — LAKESHORE HEIGHTS HOA · 100 people · 2019 | 5/83 | SYR4 |
| Arsenic | 13.9 µg/L 139% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the city: EAGLE RIDGE ESTATES CO W AND S DIST · 115 people · 2017 | 14/83 | SYR4 |
| Chloroform | 1.36 µg/L No EPA limit set Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 12.06 µg/L — LAKESHORE HEIGHTS HOA · 100 people · 2019 | 3/83 | SYR4 |
| Total Haloacetic Acids (HAA5) | 0.4275 µg/L 0.7% of the EPA limit 60 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 6.22 µg/L — LAKESHORE HEIGHTS HOA · 100 people · 2018 | 4/83 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 6.05 µg/L 101% of the EPA limit, at the 95th percentile of samples — 6 µg/L Highest in the city: PHEASANT HAVEN ESTATES · 53 people · 2019 | 3/83 | SYR4 |
| Combined Radium (-226 And -228) | 1.87 pCi/L 37% of the EPA limit 5 pCi/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2017
Highest in the city: 5.12 pCi/L — LEDGEWOOD ESTATES · 35 people · 2019 | 36/83 | SYR4 |
| Chromium | 5 µg/L 5% of the EPA limit 100 µg/L Highest in the city: PANORAMIC MOUNTAIN RIVER HEIGHTS W DIST · 65 people · 2012 | 8/83 | SYR4 |
| Bromoform | 4.3 µg/L No EPA limit set Highest in the city: LAKESHORE HEIGHTS HOA · 100 people · 2019 | 2/83 | SYR4 |
| Dibromochloromethane | 0.6070 µg/L No EPA limit set Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 4.075 µg/L — LAKESHORE HEIGHTS HOA · 100 people · 2019 | 5/83 | SYR4 |
| Dichloroacetic Acid | 3.875 µg/L No EPA limit set Highest in the city: LAKESHORE HEIGHTS HOA · 100 people · 2018 | 1/83 | SYR4 |
| Bromodichloromethane | 0.9910 µg/L No EPA limit set Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 3.18 µg/L — LAKESHORE HEIGHTS HOA · 100 people · 2019 | 3/83 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019 | 1/83 | SYR4 |
| Dibromoacetic Acid | 0.4275 µg/L No EPA limit set Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2019
Highest in the city: 1.985 µg/L — LAKESHORE HEIGHTS HOA · 100 people · 2018 | 4/83 | SYR4 |
| Monochloroacetic Acid | 1.5 µg/L No EPA limit set Highest in the city: LAKESHORE HEIGHTS HOA · 100 people · 2018 | 1/83 | SYR4 |
| Trichloroacetic Acid | 0.8300 µg/L No EPA limit set Highest in the city: LAKESHORE HEIGHTS HOA · 100 people · 2018 | 1/83 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2023
Highest in the city: 0.0390 mg/L — WAPITI ACRES COUNTY WATER AND SEWER DIST · 32 people · 2025 | 83/83 | LCR |
| PFOS | 0.0066 µg/L No EPA limit set Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2023 | 1/83 | UCMR-5 |
| PFHXS | 0.0050 µg/L No EPA limit set Main supplier: KALISPELL PUBLIC WORKS · 25,000 people · 2023 | 1/83 | 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 Kalispell
The 50 largest of 83 suppliers serving Kalispell, by population served.
Frequently asked questions about Kalispell tap water
Is Kalispell tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Kalispell. 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 Kalispell?
83 public water suppliers report drinking-water monitoring for Kalispell, Montana to the EPA. Each is listed above with its population served.
What contaminants are in Kalispell's water?
The contaminants EPA monitoring detected in Kalispell include Nitrate, Nitrate-Nitrite, Fluoride, Barium, Copper. 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.