MISSOULA, MT · Missoula County

HAPPY VALLEY MHP Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Montana’s official records. Always confirm current status with Montana before making decisions based on this information.

System facts

System ID (PWSID): MT0000377
System type: Community Water System
Population served: 55
Service connections: 22
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2024 – November 14, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2017 – August 30, 2017
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2015 – July 17, 2015
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2013 – October 24, 2013
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2013 – February 11, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2008 – August 21, 2008
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1997 – December 31, 1997
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
July 1, 1994 – July 31, 1994
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1994 – December 31, 1994
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1993 – November 27, 1996
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 30, 2024 – November 14, 2025	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2017 – August 30, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2015 – July 17, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2013 – October 24, 2013	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
January 1, 2013 – February 11, 2013	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2008 – August 21, 2008	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 1997 – December 31, 1997	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1994 – July 31, 1994	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1993 – November 27, 1996	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

November 14, 2025State Compliance achieved1 linked violation
April 2, 2025State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 4, 2025State Violation/Reminder Notice1 linked violation
January 15, 2025State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 15, 2025State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
August 30, 2017State Compliance achieved1 linked violation
July 20, 2017State Violation/Reminder Notice2 linked violations
July 17, 2015State Compliance achieved1 linked violation
October 24, 2013State Compliance achieved1 linked violation
October 24, 2013State Compliance achieved2 linked violations
February 11, 2013State Compliance achieved2 linked violations
January 14, 2013State Violation/Reminder Notice1 linked violation
January 6, 2009State Compliance achieved7 linked violations
August 21, 2008State Compliance achieved1 linked violation
December 11, 2002State Compliance achieved3 linked violations
March 11, 2002State Compliance achieved6 linked violations
December 16, 2001State Public Notification requested11 linked violations
December 16, 2001State Violation/Reminder Notice11 linked violations
December 9, 2001State Public Notification requested2 linked violations
May 15, 2001State Compliance achieved1 linked violation
December 31, 2000State Compliance achieved1 linked violation
June 19, 2000State Public Notification requested14 linked violations
November 27, 1996State Formal Notice of Violation issued5 linked violations

Contact

MULLINS, NATHAN

406-317-3913

MISSOULA, MT 59807