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Tap water quality report

Glasgow, MT

EPA monitoring detected 20 contaminants across the 2 water suppliers serving Glasgow. 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.

2
water suppliers
3,433
people served
20
contaminants found
Montana rankings Lead in Montana PFAS in Montana

What was found in Glasgow'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
60 µg/L 0.6%
of the EPA limit 10000 µg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
Highest in the city: 4805 µg/L — CHERRY CREEK WUA GLASGOW · 180 people · 2019
2/2 SYR4
Fluoride
695 µg/L 17%
of the EPA limit 4000 µg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
2/2 SYR4
Copper
546.45 µg/L 42%
of the EPA limit 1300 µg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2018
2/2 SYR4
TTHM
71 µg/L 89%
of the EPA limit 80 µg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Chloroform
51 µg/L
No EPA limit set
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
43.8 µg/L 73%
of the EPA limit 60 µg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Trichloroacetic Acid
23 µg/L
No EPA limit set
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Dichloroacetic Acid
19.9 µg/L
No EPA limit set
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Bromodichloromethane
18.1 µg/L
No EPA limit set
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2013
Highest in the city: 17 µg/L — CHERRY CREEK WUA GLASGOW · 180 people · 2013
2/2 SYR4
Lead
9.9 µg/L 66%
of the EPA limit 15 µg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2018
2/2 SYR4
Dibromochloromethane
6.11 µg/L
No EPA limit set
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Arsenic
4 µg/L 40%
of the EPA limit 10 µg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Monochloroacetic Acid
3.04 µg/L
No EPA limit set
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Combined Uranium
2 µg/L 6.7%
of the EPA limit 30 µg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2017
1/2 SYR4
Gross Alpha, Excl. Radon And U
1.8 pCi/L 12%
of the EPA limit 15 pCi/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2017
1/2 SYR4
Dibromoacetic Acid
1.065 µg/L
No EPA limit set
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Monobromoacetic Acid
0.9700 µg/L
No EPA limit set
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Bromoform
0.5500 µg/L
No EPA limit set
Main supplier: GLASGOW CITY OF · 3,253 people · 2019
1/2 SYR4
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
Main supplier: GLASGOW CITY OF · 3,253 people · 2024
2/2 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 Glasgow

SupplierPopulation served
GLASGOW CITY OF 3,253
CHERRY CREEK WUA GLASGOW 180

Frequently asked questions about Glasgow tap water

Is Glasgow tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Glasgow. 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 Glasgow?

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

What contaminants are in Glasgow's water?

The contaminants EPA monitoring detected in Glasgow include Nitrate-Nitrite, Fluoride, Copper, TTHM, Chloroform. 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.