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Tap water quality report

East Malta Colony

EPA monitoring tested this supplier for 68 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
8
detected
47
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Phillips

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
173
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2025-10-01
Other Monitoring Resolved 2025-10-01
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2024-07-01
Other Monitoring Resolved 2024-07-01
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MON Monitoring Resolved 2023-08-01 → 2023-08-31

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2020
Nitrate-Nitrite
867.5 µg/L 8.7%
of the EPA limit 10000 µg/L
worst single sample: 910 µg/L
6/7 SYR4 2012–2019
Copper
9.4 µg/L 0.7%
of the EPA limit 1300 µg/L
worst single sample: 10 µg/L
5/10 SYR4 2014–2019
Nitrate
910 µg/L 9.1%
of the EPA limit 10000 µg/L
 2/2 SYR4 2013
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 1/4 SYR4 2013–2019
Combined Uranium
8 µg/L 27%
of the EPA limit 30 µg/L
 1/2 SYR4 2013–2019
Fluoride
930 µg/L 23%
of the EPA limit 4000 µg/L
 1/3 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
11 pCi/L 73%
of the EPA limit 15 pCi/L
 1/2 SYR4 2013–2019
60 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, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HOFER, GEORGE
Phone
406-654-4720

Frequently asked questions about East Malta Colony

Is East Malta Colony tap water safe to drink?

EPA monitoring detected 8 contaminants in East Malta Colony'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 East Malta Colony's water?

EPA monitoring detected Lead, Nitrate-Nitrite, Copper, Nitrate, Arsenic, and others. The full list with the level and data source for each is above.

How many people does East Malta Colony serve?

East Malta Colony reports serving 47 people in Montana, per its EPA record.

Has East Malta Colony had any water quality violations?

The EPA has 173 violations on file for East Malta Colony, 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.