LA CASA GRANDE WATER AND SEWER DISTRICT

Montana — Community Water System — PWSID: MT0001924

System Information

PWSID	MT0001924
System Name	LA CASA GRANDE WATER AND SEWER DISTRICT
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 2, 1981
Last Reported	Jan 5, 2026

Location & Contact

State	Montana
City	EAST HELENA
ZIP Code	59635
Address	7 FIESTA COURT
Organization	LEFERINK, SUE
Phone	406-439-5206

Population & Service

Population Served	404
Service Connections	155

Drinking Water Violations (48)

This water system has 48 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
Oct 1, 2024	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 30, 2024	Lead and Copper Rule
Oct 1, 2024	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 30, 2024	Lead and Copper Rule
Oct 1, 2024	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 30, 2024	Lead and Copper Rule
Oct 1, 2020	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Aug 17, 2021	Lead and Copper Rule
Oct 1, 2020	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Aug 17, 2021	Lead and Copper Rule
Oct 1, 2020	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Aug 17, 2021	Lead and Copper Rule
Jul 1, 2014	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 16, 2014	Consumer Confidence Rule
Jul 1, 2014	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 16, 2014	Consumer Confidence Rule
Jul 1, 2011	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 3, 2011	Consumer Confidence Rule
Jul 1, 2011	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 3, 2011	Consumer Confidence Rule
Jul 1, 2011	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 3, 2011	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
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
Jul 1, 2008	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 21, 2008	Consumer Confidence Rule
Oct 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Unaddressed	—	Lead and Copper Rule
Oct 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Unaddressed	—	Lead and Copper Rule
Oct 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Unaddressed	—	Lead and Copper Rule
Oct 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Unaddressed	—	Lead and Copper Rule
Oct 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Unaddressed	—	Lead and Copper Rule
Oct 1, 2007	—	Lead and Copper Rule	MR	No	No	—	TT	—	Unaddressed	—	Lead and Copper Rule
Jul 1, 2007	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 21, 2008	Consumer Confidence Rule
Jul 1, 2007	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 21, 2008	Consumer Confidence Rule
Jul 1, 2007	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 21, 2008	Consumer Confidence Rule
Jul 1, 2007	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 21, 2008	Consumer Confidence Rule
Jul 1, 2007	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 21, 2008	Consumer Confidence Rule
Feb 5, 2007	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Mar 5, 2007	Consumer Confidence Rule
Feb 5, 2007	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Mar 5, 2007	Consumer Confidence Rule
Oct 1, 2005	Oct 31, 2005	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2005	Total Coliform Rule
Oct 1, 2005	Oct 31, 2005	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2005	Total Coliform Rule
Oct 1, 2005	Oct 31, 2005	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2005	Total Coliform Rule
Jan 1, 2005	Dec 31, 2005	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2005	Nitrate Rule
Jan 1, 2005	Dec 31, 2005	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2005	Nitrate Rule
Jan 1, 2005	Dec 31, 2005	Nitrate-Nitrite	MR	No	Yes	—	—	—	Resolved	Dec 31, 2005	Nitrate Rule
Oct 1, 2003	Oct 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2003	Total Coliform Rule
Oct 1, 2003	Oct 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2003	Total Coliform Rule
Oct 1, 2003	Oct 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2003	Total Coliform Rule
Oct 1, 2003	Oct 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2003	Total Coliform Rule
Oct 1, 2003	Oct 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2003	Total Coliform Rule
Oct 1, 2003	Oct 31, 2003	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2003	Total Coliform Rule
Jan 1, 1997	Dec 31, 1997	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1997	Nitrate Rule
Jan 1, 1996	Dec 31, 1998	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Dec 31, 1998	Arsenic Rule
Sep 1, 1995	Sep 30, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1995	Total Coliform Rule
Jun 1, 1995	Jun 30, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 1995	Total Coliform Rule
Jun 1, 1995	Jun 30, 1995	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 1995	Total Coliform Rule
Jan 1, 1993	Dec 31, 1993	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1993	Nitrate Rule

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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