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Tap water quality report

East End Colony Inc

EPA monitoring tested this supplier for 67 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

67
contaminants tested
10
detected
100
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Hill

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
73
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2022-09-29
MR Monitoring Resolved 2022-09-29
MR Monitoring Resolved 2022-07-01
MR Monitoring Resolved 2022-07-01
MR Monitoring Resolved 2022-07-01
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31

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
Nitrate-Nitrite
2715 µg/L 27%
of the EPA limit 10000 µg/L
worst single sample: 2790 µg/L
26/40 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Copper
662 µg/L 51%
of the EPA limit 1300 µg/L
worst single sample: 860 µg/L
10/10 SYR4 2015–2018
Lead
2.75 µg/L 18%
of the EPA limit 15 µg/L
worst single sample: 3 µg/L
6/10 SYR4 2015–2018
Bromodichloromethane
4.9 µg/L
No EPA limit set
worst single sample: 5.1 µg/L
2/3 SYR4 2013–2019
Dibromochloromethane
2.445 µg/L
No EPA limit set
worst single sample: 2.5 µg/L
2/3 SYR4 2013–2019
TTHM
9.655 µg/L 12%
of the EPA limit 80 µg/L
worst single sample: 10 µg/L
2/2 SYR4 2013–2016
Chloroform
2.3 µg/L
No EPA limit set
 1/3 SYR4 2013–2019
Combined Radium (-226 And -228)
2.2 pCi/L 44%
of the EPA limit 5 pCi/L
 1/2 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
1.5 pCi/L 10%
of the EPA limit 15 pCi/L
 1/2 SYR4 2013–2019
57 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, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneFluorideHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WALDNER, RON E
Phone
406-398-5373
Email
[email protected]

Frequently asked questions about East End Colony Inc

Is East End Colony Inc tap water safe to drink?

EPA monitoring detected 10 contaminants in East End Colony Inc'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 End Colony Inc's water?

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

How many people does East End Colony Inc serve?

East End Colony Inc reports serving 100 people in Montana, per its EPA record.

Has East End Colony Inc had any water quality violations?

The EPA has 73 violations on file for East End Colony Inc, 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.