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Tap water quality report

Stevensville, MT

EPA monitoring detected 19 contaminants across the 3 water suppliers serving Stevensville. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

3
water suppliers
2,320
people served
19
contaminants found
Montana rankings Lead in Montana PFAS in Montana

What was found in Stevensville'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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
2059 µg/L 21%
of the EPA limit 10000 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2019
3/3 SYR4
Nitrate
1870 µg/L 19%
of the EPA limit 10000 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2017
3/3 SYR4
Copper
700 µg/L 54%
of the EPA limit 1300 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2018
3/3 SYR4
Barium
602 µg/L 30%
of the EPA limit 2000 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2017
3/3 SYR4
Fluoride
260 µg/L 6.5%
of the EPA limit 4000 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2017
Highest in the city: 319 µg/L — KOOTENAI CREEK VILLAGE · 175 people · 2019
3/3 SYR4
Total Haloacetic Acids (HAA5)
28.65 µg/L 48%
of the EPA limit 60 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2019
2/3 SYR4
TTHM
17.55 µg/L 22%
of the EPA limit 80 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2019
2/3 SYR4
Trichloroacetic Acid
15.8 µg/L
No EPA limit set
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2019
1/3 SYR4
Chloroform
15.4 µg/L
No EPA limit set
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2019
2/3 SYR4
Lead
1 µg/L 6.7%
of the EPA limit 15 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2018
Highest in the city: 12 µg/L — KOOTENAI CREEK VILLAGE · 175 people · 2018
3/3 SYR4
Dichloroacetic Acid
11.86 µg/L
No EPA limit set
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2019
1/3 SYR4
Combined Uranium
5.4 µg/L 18%
of the EPA limit 30 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2017
2/3 SYR4
Gross Alpha, Excl. Radon And U
3.625 pCi/L 24%
of the EPA limit 15 pCi/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2017
3/3 SYR4
Combined Radium (-226 And -228)
2.6 pCi/L 52%
of the EPA limit 5 pCi/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2017
2/3 SYR4
Bromodichloromethane
2.58 µg/L
No EPA limit set
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2019
2/3 SYR4
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2017
1/3 SYR4
Dibromochloromethane
1.45 µg/L
No EPA limit set
Highest in the city: KOOTENAI CREEK VILLAGE · 175 people · 2019
1/3 SYR4
Dibromoacetic Acid
0.6120 µg/L
No EPA limit set
Highest in the city: KOOTENAI CREEK VILLAGE · 175 people · 2019
1/3 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: STEVENSVILLE TOWN OF · 2,090 people · 2024
Highest in the city: 0.0010 mg/L — MOUNTAIN SHADOWS ESTATES STEVENSVILLE · 55 people · 2025
3/3 LCR
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 Stevensville

SupplierPopulation served
STEVENSVILLE TOWN OF 2,090
KOOTENAI CREEK VILLAGE 175
MOUNTAIN SHADOWS ESTATES STEVENSVILLE 55

Frequently asked questions about Stevensville tap water

Is Stevensville tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Stevensville. 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 Stevensville?

3 public water suppliers report drinking-water monitoring for Stevensville, Montana to the EPA. Each is listed above with its population served.

What contaminants are in Stevensville's water?

The contaminants EPA monitoring detected in Stevensville 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.