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Tap water quality report

Glasgow City of

EPA monitoring tested this supplier for 72 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

72
contaminants tested
20
detected
3,253
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Surface water
Ownership
Local government
Counties served
Valley

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
57
violations on file
0
still open
ViolationTypeStatusPeriod
MON Monitoring Resolved 2026-04-01 → 2026-04-30
MON Monitoring Resolved 2026-04-01 → 2026-04-30
MON Monitoring Resolved 2026-04-01 → 2026-04-30
MON Monitoring Resolved 2026-03-01 → 2026-03-31
MON Monitoring Resolved 2026-03-01 → 2026-03-31
MON Monitoring Resolved 2026-03-01 → 2026-03-31
Other Monitoring Resolved 2020-07-01
Other Monitoring Resolved 2020-07-01
Other Monitoring Resolved 2018-07-01
Other Monitoring Resolved 2018-07-01

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
18.1 µg/L
No EPA limit set
worst single sample: 19 µg/L
39/40 SYR4 2012–2019
Chloroform
51 µg/L
No EPA limit set
worst single sample: 52 µg/L
39/40 SYR4 2012–2019
Dibromochloromethane
6.11 µg/L
No EPA limit set
worst single sample: 6.3 µg/L
39/40 SYR4 2012–2019
TTHM
71 µg/L 89%
of the EPA limit 80 µg/L
worst single sample: 73 µg/L
39/40 SYR4 2012–2019
Dichloroacetic Acid
19.9 µg/L
No EPA limit set
worst single sample: 28 µg/L
32/32 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
43.8 µg/L 73%
of the EPA limit 60 µg/L
worst single sample: 55 µg/L
32/32 SYR4 2012–2019
Trichloroacetic Acid
23 µg/L
No EPA limit set
worst single sample: 25 µg/L
32/32 SYR4 2012–2019
Dibromoacetic Acid
1.065 µg/L
No EPA limit set
worst single sample: 1.1 µg/L
28/32 SYR4 2012–2019
Copper
546.45 µg/L 42%
of the EPA limit 1300 µg/L
worst single sample: 650 µg/L
20/20 SYR4 2015–2018
Nitrate-Nitrite
60 µg/L 0.6%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
9.9 µg/L 66%
of the EPA limit 15 µg/L
worst single sample: 12 µg/L
15/20 SYR4 2015–2018
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2024
Monochloroacetic Acid
3.04 µg/L
No EPA limit set
worst single sample: 3.4 µg/L
10/32 SYR4 2012–2019
Arsenic
4 µg/L 40%
of the EPA limit 10 µg/L
 8/8 SYR4 2012–2019
Monobromoacetic Acid
0.9700 µg/L
No EPA limit set
worst single sample: 1 µg/L
4/32 SYR4 2012–2019
Fluoride
695 µg/L 17%
of the EPA limit 4000 µg/L
worst single sample: 700 µg/L
2/2 SYR4 2013–2019
Bromoform
0.5500 µg/L
No EPA limit set
 1/40 SYR4 2012–2019
Combined Uranium
2 µg/L 6.7%
of the EPA limit 30 µg/L
 1/1 SYR4 2017
Gross Alpha, Excl. Radon And U
1.8 pCi/L 12%
of the EPA limit 15 pCi/L
 1/1 SYR4 2017
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
 1/1 SYR4 2013
52 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SKUBINNA, PAUL
Phone
406-228-2476

Frequently asked questions about Glasgow City of

Is Glasgow City of tap water safe to drink?

EPA monitoring detected 20 contaminants in Glasgow City of's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Glasgow City of's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, TTHM, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Glasgow City of serve?

Glasgow City of reports serving 3,253 people in Montana, per its EPA record.

Has Glasgow City of had any water quality violations?

The EPA has 57 violations on file for Glasgow City of, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.