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Tap water quality report

Happy Valley Mhp

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
55
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Missoula

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
44
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2024-12-30
MR Monitoring Resolved 2024-12-30
Other Monitoring Resolved 2017-07-01
Other Monitoring Resolved 2017-07-01
Other Monitoring Resolved 2015-07-01
Other Monitoring Resolved 2015-07-01
Other Monitoring Resolved 2013-10-01
Other Monitoring Resolved 2013-10-01
Other Monitoring Resolved 2013-07-01
Other Monitoring Resolved 2013-07-01

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 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
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2024
Copper
844 µg/L 65%
of the EPA limit 1300 µg/L
 11/15 SYR4 2012–2018
Nitrate-Nitrite
300 µg/L 3%
of the EPA limit 10000 µg/L
 8/8 SYR4 2012–2019
Nitrate
300 µg/L 3%
of the EPA limit 10000 µg/L
 4/4 SYR4 2015–2018
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 3/3 SYR4 2012–2018
Barium
200 µg/L 10%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2018
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2018
Lead
5 µg/L 33%
of the EPA limit 15 µg/L
 2/15 SYR4 2012–2018
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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MULLINS, NATHAN
Phone
406-317-3913
Email
NATHANMULLINS360@GMAIL.COM

Frequently asked questions about Happy Valley Mhp

Is Happy Valley Mhp tap water safe to drink?

EPA monitoring detected 8 contaminants in Happy Valley Mhp'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 Happy Valley Mhp's water?

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

How many people does Happy Valley Mhp serve?

Happy Valley Mhp reports serving 55 people in Montana, per its EPA record.

Has Happy Valley Mhp had any water quality violations?

The EPA has 44 violations on file for Happy Valley Mhp, 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.