INTERIOR

South Dakota — Community Water System — PWSID: SD4600171

System Information

PWSID	SD4600171
System Name	INTERIOR
System Type	Community Water System
Water Source	Ground Water
Activity Status	Inactive
Owner Type	Local
EPA Region	08
Serves School	No
Wholesaler	No
First Reported	Feb 13, 1979
Last Reported	Dec 9, 2025

Location & Contact

State	South Dakota
City	INTERIOR
ZIP Code	577500063
Address	GALEN LIVERMONT
Organization	—
Phone	—

Population & Service

Population Served	77
Service Connections	34

Drinking Water Violations (38)

This water system has 38 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
Jul 1, 2001	Aug 1, 2001	Consumer Confidence Rule	Other	No	Yes	—	—	—	Resolved	Aug 1, 2001	Consumer Confidence Rule
Jul 1, 2001	Aug 1, 2001	Consumer Confidence Rule	Other	No	Yes	—	—	—	Resolved	Aug 1, 2001	Consumer Confidence Rule
Oct 1, 1998	Oct 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1998	Total Coliform Rule
Oct 1, 1998	Oct 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Oct 31, 1998	Total Coliform Rule
Jan 1, 1998	Jan 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Jan 31, 1998	Total Coliform Rule
Jan 1, 1998	Jan 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Jan 31, 1998	Total Coliform Rule
Nov 1, 1996	Nov 30, 1996	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Nov 30, 1996	Total Coliform Rule
Mar 16, 1996	Apr 15, 1996		Other	No	No	—	—	—	Archived	Apr 15, 1996	Miscellaneous Other Rules
Jan 1, 1996	Sep 16, 1997	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 16, 1997	Lead and Copper Rule
Jan 1, 1996	Sep 16, 1997	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 16, 1997	Lead and Copper Rule
Jan 1, 1996	Sep 16, 1997	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 16, 1997	Lead and Copper Rule
Jan 1, 1996	Jan 31, 1996	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Jan 31, 1996	Total Coliform Rule
Sep 1, 1995	Sep 30, 1995	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Sep 30, 1995	Total Coliform Rule
Dec 18, 1994	Jan 17, 1995		Other	No	No	—	—	—	Archived	Jan 17, 1995	Miscellaneous Other Rules
Oct 1, 1994	Oct 31, 1994	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Oct 31, 1994	Total Coliform Rule
Jul 1, 1994	Mar 3, 1995	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Mar 3, 1995	Lead and Copper Rule
Jul 1, 1994	Mar 3, 1995	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Mar 3, 1995	Lead and Copper Rule
May 1, 1994	May 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	May 31, 1994	Total Coliform Rule
May 1, 1994	May 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	May 31, 1994	Total Coliform Rule
Apr 10, 1994	Jun 9, 1994		Other	No	No	—	—	—	Archived	Jun 9, 1994	Miscellaneous Other Rules
Apr 1, 1994	Apr 30, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Apr 30, 1994	Total Coliform Rule
Apr 1, 1994	Apr 30, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Apr 30, 1994	Total Coliform Rule
Mar 1, 1994	Mar 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Mar 31, 1994	Total Coliform Rule
Mar 1, 1994	Mar 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Mar 31, 1994	Total Coliform Rule
Jan 1, 1994	Mar 3, 1995	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Mar 3, 1995	Lead and Copper Rule
Jan 1, 1994	Mar 3, 1995	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Mar 3, 1995	Lead and Copper Rule
Jan 1, 1993	Dec 31, 1995	Asbestos	MR	No	Yes	—	7 MFL	—	Resolved	Dec 31, 1995	Inorganic Chemicals
Jan 1, 1993	Dec 31, 1995	Asbestos	MR	No	Yes	—	7 MFL	—	Resolved	Dec 31, 1995	Inorganic Chemicals
Jun 1, 1992	Jun 30, 1992	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Jun 30, 1992	Total Coliform Rule
Jun 1, 1992	Jun 30, 1992	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Jun 30, 1992	Total Coliform Rule
Nov 1, 1991	Nov 30, 1991	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Nov 30, 1991	Total Coliform Rule
Nov 1, 1991	Nov 30, 1991	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Nov 30, 1991	Total Coliform Rule
Sep 1, 1991	Sep 30, 1991	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Sep 30, 1991	Total Coliform Rule
Aug 1, 1991	Aug 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1991	Total Coliform Rule
Jun 1, 1991	Jun 30, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Jun 30, 1991	Total Coliform Rule
Oct 5, 1990	Nov 4, 1990		Other	No	No	—	—	—	Archived	Nov 4, 1990	Miscellaneous Other Rules
Jul 1, 1976	Jun 30, 1980	Gross Alpha, Excl. Radon and U	MR	No	No	—	15 pCi/L	—	Archived	Jun 30, 1980	Radionuclides and Revised Rad Rule
Jul 1, 1976	Jun 30, 1980	Combined Radium (-226 and -228)	MR	No	No	—	5 pCi/L	—	Archived	Jun 30, 1980	Radionuclides and Revised Rad 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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