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Tap water quality report

Opheim, MT

EPA monitoring detected 17 contaminants across the 1 water supplier serving Opheim. 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
111
people served
17
contaminants found
Montana rankings Lead in Montana PFAS in Montana

What was found in Opheim'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
6010 µg/L 60%
of the EPA limit 10000 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2019
1/1 SYR4
Fluoride
2100 µg/L 53%
of the EPA limit 4000 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2019
1/1 SYR4
Copper
177.4 µg/L 14%
of the EPA limit 1300 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2018
1/1 SYR4
Nitrite
160 µg/L 16%
of the EPA limit 1000 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2018
1/1 SYR4
Barium
88 µg/L 4.4%
of the EPA limit 2000 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2018
1/1 SYR4
Combined Uranium
23 µg/L 77%
of the EPA limit 30 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2019
1/1 SYR4
Lead
11.9 µg/L 79%
of the EPA limit 15 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2018
1/1 SYR4
Arsenic
6 µg/L 60%
of the EPA limit 10 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2018
1/1 SYR4
Gross Alpha, Excl. Radon And U
4.42 pCi/L 29%
of the EPA limit 15 pCi/L
Main supplier: OPHEIM TOWN OF · 111 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
4.35 pCi/L 87%
of the EPA limit 5 pCi/L
Main supplier: OPHEIM TOWN OF · 111 people · 2019
1/1 SYR4
Toluene
3.2 µg/L 0.3%
of the EPA limit 1000 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2019
1/1 SYR4
Selenium
2.95 µg/L 5.9%
of the EPA limit 50 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2018
1/1 SYR4
Antimony, Total
2 µg/L 33%
of the EPA limit 6 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2018
1/1 SYR4
Chloroform
1.8 µg/L
No EPA limit set
Main supplier: OPHEIM TOWN OF · 111 people · 2019
1/1 SYR4
TTHM
1.8 µg/L 2.3%
of the EPA limit 80 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2019
1/1 SYR4
Xylenes, Total
0.7100 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2019
1/1 SYR4
Lead
0.0090 mg/L 60%
of the EPA limit 0.0150 mg/L
Main supplier: OPHEIM TOWN OF · 111 people · 2026
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 Opheim

SupplierPopulation served
OPHEIM TOWN OF 111

Frequently asked questions about Opheim tap water

Is Opheim tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Opheim. 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 Opheim?

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

What contaminants are in Opheim's water?

The contaminants EPA monitoring detected in Opheim include Nitrate-Nitrite, Fluoride, Copper, Nitrite, Barium. 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.