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Tap water quality report

Zenith Colony

EPA monitoring tested this supplier for 66 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

66
contaminants tested
8
detected
70
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Glacier

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
586
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2021-12-30
MR Monitoring Resolved 2021-12-30
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
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
Lead
8.75 µg/L 58%
of the EPA limit 15 µg/L
worst single sample: 17 µg/L
16/25 SYR4 2012–2019
Nitrate-Nitrite
1680 µg/L 17%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Copper
34.4 µg/L 2.6%
of the EPA limit 1300 µg/L
worst single sample: 47 µg/L
15/25 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2024
Combined Uranium
9.8 µg/L 33%
of the EPA limit 30 µg/L
worst single sample: 10 µg/L
5/5 SYR4 2012–2019
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 4/4 SYR4 2012–2019
Combined Radium (-226 And -228)
1.575 pCi/L 32%
of the EPA limit 5 pCi/L
worst single sample: 1.6 pCi/L
2/5 SYR4 2012–2019
Selenium
1.95 µg/L 3.9%
of the EPA limit 50 µg/L
worst single sample: 2 µg/L
2/4 SYR4 2012–2019
58 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, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WALDNER, DAVID M
Phone
406-336-5000
Email
sec@zenithhb.com

Frequently asked questions about Zenith Colony

Is Zenith Colony tap water safe to drink?

EPA monitoring detected 8 contaminants in Zenith 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 Zenith Colony's water?

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

How many people does Zenith Colony serve?

Zenith Colony reports serving 70 people in Montana, per its EPA record.

Has Zenith Colony had any water quality violations?

The EPA has 586 violations on file for Zenith 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.