HAPPY VALLEY MHP

Montana — Community Water System — PWSID: MT0000377

System Information

PWSID	MT0000377
System Name	HAPPY VALLEY MHP
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Private
EPA Region	08
Serves School	No
Wholesaler	No
First Reported	Feb 13, 1979
Last Reported	Jan 5, 2026

Location & Contact

State	Montana
City	MISSOULA
ZIP Code	59807
Address	PO BOX 8616
Organization	MULLINS, NATHAN
Phone	406-317-3913

Population & Service

Population Served	55
Service Connections	22

Drinking Water Violations (46)

This water system has 46 violations recorded in the EPA SDWIS database.

Begin Date	End Date	Contaminant	Category	Health-Based	Major	Measured	Federal MCL	State MCL	Status	Return to Compliance	Rule
Dec 30, 2024	—	Lead and Copper Rule	MR	No	No	—	TT	—	Unaddressed	—	Lead and Copper Rule
Jul 1, 2017	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 30, 2017	Consumer Confidence Rule
Jul 1, 2017	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 30, 2017	Consumer Confidence Rule
Jul 1, 2015	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 17, 2015	Consumer Confidence Rule
Jul 1, 2015	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 17, 2015	Consumer Confidence Rule
Oct 1, 2013	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 24, 2013	Consumer Confidence Rule
Oct 1, 2013	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 24, 2013	Consumer Confidence Rule
Jul 1, 2013	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 24, 2013	Consumer Confidence Rule
Jul 1, 2013	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 24, 2013	Consumer Confidence Rule
Jan 1, 2013	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Feb 11, 2013	Lead and Copper Rule
Jan 1, 2013	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Feb 11, 2013	Lead and Copper Rule
Jul 1, 2008	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 21, 2008	Consumer Confidence Rule
Jul 1, 2008	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 21, 2008	Consumer Confidence Rule
Jul 1, 2008	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 21, 2008	Consumer Confidence Rule
Oct 1, 2002	Oct 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2002	Total Coliform Rule
Oct 1, 2002	Oct 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2002	Total Coliform Rule
Oct 1, 2002	Oct 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2002	Total Coliform Rule
Oct 1, 2002	Oct 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2002	Total Coliform Rule
Oct 1, 2002	Oct 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2002	Total Coliform Rule
Nov 1, 2001	Nov 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2001	Total Coliform Rule
Nov 1, 2001	Nov 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2001	Total Coliform Rule
Nov 1, 2001	Nov 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2001	Total Coliform Rule
Nov 1, 2001	Nov 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2001	Total Coliform Rule
Nov 1, 2001	Nov 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2001	Total Coliform Rule
Nov 1, 2001	Nov 30, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2001	Total Coliform Rule
Oct 1, 2001	Oct 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2001	Total Coliform Rule
Oct 1, 2001	Oct 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2001	Total Coliform Rule
Oct 1, 2001	Oct 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2001	Total Coliform Rule
Oct 1, 2001	Oct 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2001	Total Coliform Rule
Oct 1, 2001	Oct 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2001	Total Coliform Rule
Oct 1, 2001	Oct 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2001	Total Coliform Rule
Jan 1, 1999	Dec 31, 1999	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1999	Nitrate Rule
Jan 1, 1999	Dec 31, 1999	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1999	Nitrate Rule
Jan 1, 1999	Dec 31, 1999	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1999	Nitrate Rule
Oct 1, 1997	Oct 31, 1997	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 1997	Total Coliform Rule
Jan 1, 1997	Dec 31, 1997	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1997	Nitrate Rule
Jan 1, 1997	Dec 31, 1997	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1997	Nitrate Rule
Jan 1, 1997	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 31, 2000	Lead and Copper Rule
Jul 1, 1994	Jul 31, 1994	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jul 31, 1994	Total Coliform Rule
Jan 1, 1994	Dec 31, 1994	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1994	Nitrate Rule
Jul 1, 1993	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 27, 1996	Lead and Copper Rule
Jul 1, 1993	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 27, 1996	Lead and Copper Rule
Jan 1, 1993	Dec 31, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1993	Nitrate Rule
—	—		—	No	No	—	—	—	—	—	—
—	—		—	No	No	—	—	—	—	—	—
—	—		—	No	No	—	—	—	—	—	—

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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