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Tap water quality report

King Ranch Colony

EPA monitoring tested this supplier for 66 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

66
contaminants tested
9
detected
56
people served
401
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Fergus

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.

401
health-based violations
627
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31

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
17035 µg/L 170%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 17900 µg/L
64/66 SYR4 2012–2019
Copper
121.8 µg/L 9.4%
of the EPA limit 1300 µg/L
worst single sample: 147 µg/L
10/10 SYR4 2012–2016
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2024
Lead
1.95 µg/L 13%
of the EPA limit 15 µg/L
worst single sample: 2 µg/L
2/10 SYR4 2012–2016
Barium
80 µg/L 4%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Combined Uranium
1 µg/L 3.3%
of the EPA limit 30 µg/L
 1/1 SYR4 2012
Fluoride
300 µg/L 7.5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
Gross Alpha, Excl. Radon And U
3.8 pCi/L 25%
of the EPA limit 15 pCi/L
 1/1 SYR4 2012
Selenium
1 µg/L 2%
of the EPA limit 50 µg/L
 1/1 SYR4 2012
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-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HOFER, MARVIN M
Phone
406-538-9835

Frequently asked questions about King Ranch Colony

Is King Ranch Colony tap water safe to drink?

EPA monitoring detected 9 contaminants in King Ranch 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 King Ranch Colony's water?

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

How many people does King Ranch Colony serve?

King Ranch Colony reports serving 56 people in Montana, per its EPA record.

Has King Ranch Colony had any water quality violations?

The EPA has 627 violations on file for King Ranch Colony, of which 401 are health-based (a contaminant limit or required treatment was breached) and 1 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.