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Tap water quality report

Mobile City Home Park No 1

EPA monitoring tested this supplier for 66 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

66
contaminants tested
11
detected
100
people served
5
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Lewis and Clark

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.

5
health-based violations
102
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MON Monitoring Resolved 2024-12-01 → 2024-12-31
MON Monitoring Resolved 2024-12-01 → 2024-12-31
MON Monitoring Resolved 2024-12-01 → 2024-12-31
MON Monitoring Resolved 2020-10-01 → 2020-10-31
MON Monitoring Resolved 2020-10-01 → 2020-10-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate-Nitrite
6680 µg/L 67%
of the EPA limit 10000 µg/L
 38/38 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2025
Copper
188 µg/L 14%
of the EPA limit 1300 µg/L
 10/10 SYR4 2014–2017
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 6/6 SYR4 2013–2017
Chloroform
9 µg/L
No EPA limit set
 6/6 SYR4 2013–2017
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 6/6 SYR4 2013–2017
TTHM
9 µg/L 11%
of the EPA limit 80 µg/L
 6/6 SYR4 2013–2017
Combined Radium (-226 And -228)
2.3 pCi/L 46%
of the EPA limit 5 pCi/L
 4/4 SYR4 2016–2017
Combined Uranium
3 µg/L 10%
of the EPA limit 30 µg/L
 4/4 SYR4 2016–2017
Lead
2 µg/L 13%
of the EPA limit 15 µg/L
 4/10 SYR4 2014–2017
Gross Alpha, Excl. Radon And U
5 pCi/L 33%
of the EPA limit 15 pCi/L
 3/4 SYR4 2016–2017
55 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 TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MC, PROPERTIES
Phone
406-697-5900
Email
david.dorn@andesite.com

Frequently asked questions about Mobile City Home Park No 1

Is Mobile City Home Park No 1 tap water safe to drink?

EPA monitoring detected 11 contaminants in Mobile City Home Park No 1'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 Mobile City Home Park No 1's water?

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

How many people does Mobile City Home Park No 1 serve?

Mobile City Home Park No 1 reports serving 100 people in Montana, per its EPA record.

Has Mobile City Home Park No 1 had any water quality violations?

The EPA has 102 violations on file for Mobile City Home Park No 1, of which 5 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.