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Tap water quality report

Big Sky Mobile Manor

EPA monitoring tested this supplier for 69 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
8
detected
35
people served
2
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
GWP
Ownership
Private
Counties served
Flathead

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.

2
health-based violations
81
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2014-05-03
TT Health-based Resolved 2014-05-03
MR Monitoring Unaddressed 2025-10-01
MR Monitoring Unaddressed 2025-10-01
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-07-01
MON Monitoring Resolved 2025-01-01 → 2025-01-31
MON Monitoring Resolved 2025-01-01 → 2025-01-31
MON Monitoring Resolved 2025-01-01 → 2025-01-31
Other Monitoring Resolved 2024-07-01

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
Copper
70 µg/L 5.4%
of the EPA limit 1300 µg/L
 15/15 SYR4 2013–2019
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2019
Nitrate-Nitrite
1501 µg/L 15%
of the EPA limit 10000 µg/L
worst single sample: 1620 µg/L
8/8 SYR4 2012–2019
Barium
160 µg/L 8%
of the EPA limit 2000 µg/L
 3/3 SYR4 2013–2019
Fluoride
80 µg/L 2%
of the EPA limit 4000 µg/L
 3/3 SYR4 2013–2019
Lead
9.7 µg/L 65%
of the EPA limit 15 µg/L
worst single sample: 10 µg/L
2/15 SYR4 2013–2019
Nitrate
1280 µg/L 13%
of the EPA limit 10000 µg/L
 2/2 SYR4 2016
Combined Radium (-226 And -228)
1.9 pCi/L 38%
of the EPA limit 5 pCi/L
 1/1 SYR4 2016
61 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TURNER, REDFORD
Phone
406-270-2351

Frequently asked questions about Big Sky Mobile Manor

Is Big Sky Mobile Manor tap water safe to drink?

EPA monitoring detected 8 contaminants in Big Sky Mobile Manor'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 Big Sky Mobile Manor's water?

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

How many people does Big Sky Mobile Manor serve?

Big Sky Mobile Manor reports serving 35 people in Montana, per its EPA record.

Has Big Sky Mobile Manor had any water quality violations?

The EPA has 81 violations on file for Big Sky Mobile Manor, of which 2 are health-based (a contaminant limit or required treatment was breached) and 2 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.