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Tap water quality report

Pinesdale, MT

EPA monitoring detected 18 contaminants across the 1 water supplier serving Pinesdale. 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.

1
water supplier
800
people served
18
contaminants found
Montana rankings Lead in Montana PFAS in Montana

What was found in Pinesdale'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
Fluoride
2060 µg/L 52%
of the EPA limit 4000 µg/L
Main supplier: PINESDALE TOWN OF · 800 people · 2018
1/1 SYR4
Nitrate-Nitrite
394 µg/L 3.9%
of the EPA limit 10000 µg/L
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Copper
352.5 µg/L 27%
of the EPA limit 1300 µg/L
Main supplier: PINESDALE TOWN OF · 800 people · 2017
1/1 SYR4
Nitrate
350 µg/L 3.5%
of the EPA limit 10000 µg/L
Main supplier: PINESDALE TOWN OF · 800 people · 2018
1/1 SYR4
Total Haloacetic Acids (HAA5)
117.6 µg/L 196%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Barium
100 µg/L 5%
of the EPA limit 2000 µg/L
Main supplier: PINESDALE TOWN OF · 800 people · 2018
1/1 SYR4
Trichloroacetic Acid
76.2 µg/L
No EPA limit set
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
TTHM
48.2 µg/L 60%
of the EPA limit 80 µg/L
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Chloroform
47.2 µg/L
No EPA limit set
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Dichloroacetic Acid
38.4 µg/L
No EPA limit set
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Lithium
33 µg/L
No EPA limit set
Main supplier: PINESDALE TOWN OF · 800 people · 2024
1/1 UCMR-5
Monobromoacetic Acid
6.1 µg/L
No EPA limit set
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Lead
3.6 µg/L 24%
of the EPA limit 15 µg/L
Main supplier: PINESDALE TOWN OF · 800 people · 2017
1/1 SYR4
Monochloroacetic Acid
2.77 µg/L
No EPA limit set
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Dibromochloromethane
1.48 µg/L
No EPA limit set
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Bromodichloromethane
1.38 µg/L
No EPA limit set
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Dibromoacetic Acid
0.5560 µg/L
No EPA limit set
Main supplier: PINESDALE TOWN OF · 800 people · 2019
1/1 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: PINESDALE TOWN OF · 800 people · 2017
1/1 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 Pinesdale

SupplierPopulation served
PINESDALE TOWN OF 800

Frequently asked questions about Pinesdale tap water

Is Pinesdale tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Pinesdale. 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 Pinesdale?

1 public water supplier report drinking-water monitoring for Pinesdale, Montana to the EPA. Each is listed above with its population served.

What contaminants are in Pinesdale's water?

The contaminants EPA monitoring detected in Pinesdale include Fluoride, Nitrate-Nitrite, Copper, Nitrate, Total Haloacetic Acids (HAA5). 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.