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Tap water quality report

Montana State Prison

EPA monitoring tested this supplier for 69 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
10
detected
2,100
people served
12
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
State government
Counties served
Powell

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.

12
health-based violations
334
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2013-09-01 → 2013-09-30
MCL Health-based Resolved 2013-09-01 → 2013-09-30
MCL Health-based Resolved 2013-09-01 → 2013-09-30

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
Nitrate-Nitrite
1134 µg/L 11%
of the EPA limit 10000 µg/L
worst single sample: 1200 µg/L
32/32 SYR4 2012–2019
Copper
400.6 µg/L 31%
of the EPA limit 1300 µg/L
worst single sample: 700 µg/L
30/30 SYR4 2012–2018
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2024
Lead
2 µg/L 13%
of the EPA limit 15 µg/L
 9/30 SYR4 2012–2018
Combined Radium (-226 And -228)
4.905 pCi/L 98%
of the EPA limit 5 pCi/L
worst single sample: 5.4 pCi/L
4/6 SYR4 2016–2018
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 3/6 SYR4 2013–2017
Combined Uranium
6.8 µg/L 23%
of the EPA limit 30 µg/L
worst single sample: 7 µg/L
2/2 SYR4 2018
Gross Alpha, Excl. Radon And U
3.805 pCi/L 25%
of the EPA limit 15 pCi/L
worst single sample: 3.9 pCi/L
2/3 SYR4 2013–2018
Barium
149 µg/L 7.5%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Fluoride
320 µg/L 8%
of the EPA limit 4000 µg/L
 1/1 SYR4 2013
59 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BEESON, MYRON E
Phone
406-645-0652
Email
[email protected]

Frequently asked questions about Montana State Prison

Is Montana State Prison tap water safe to drink?

EPA monitoring detected 10 contaminants in Montana State Prison'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 Montana State Prison's water?

EPA monitoring detected Nitrate-Nitrite, Copper, Lead, Lead, Combined Radium (-226 And -228), and others. The full list with the level and data source for each is above.

How many people does Montana State Prison serve?

Montana State Prison reports serving 2,100 people in Montana, per its EPA record.

Has Montana State Prison had any water quality violations?

The EPA has 334 violations on file for Montana State Prison, of which 12 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.