RIMROCK RIDGE WATER ASSOCIATION

South Dakota — Community Water System — PWSID: SD4602084

System Information

PWSID	SD4602084
System Name	RIMROCK RIDGE WATER ASSOCIATION
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	Jun 27, 1991
Last Reported	Dec 9, 2025

Location & Contact

State	South Dakota
City	RAPID CITY
ZIP Code	57709
Address	PO BOX 9141
Organization	RIMROCK RIDGE WATER ASSOCIATION
Phone	6054312678

Population & Service

Population Served	35
Service Connections	16

Drinking Water Violations (62)

This water system has 62 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
Aug 1, 1995	Aug 31, 1995	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 1995	Total Coliform Rule
Aug 1, 1995	Aug 31, 1995	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 1995	Total Coliform Rule
Aug 1, 1995	Aug 31, 1995	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 1995	Total Coliform Rule
Jan 1, 1995	Dec 31, 1995	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Nov 1, 1994	Nov 30, 1994	Coliform (TCR)	MR	No	No	—	5% of samples	—	Archived	Nov 30, 1994	Total Coliform Rule
Oct 1, 1994	Oct 31, 1994	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Oct 31, 1994	Total Coliform Rule
Sep 1, 1994	Sep 30, 1994	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Sep 30, 1994	Total Coliform Rule
Sep 1, 1994	Sep 30, 1994	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Sep 30, 1994	Total Coliform Rule
Jul 1, 1994	Jul 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1994	Total Coliform Rule
Jul 1, 1994	Jul 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1994	Total Coliform Rule
Jul 1, 1994	Jul 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1994	Total Coliform Rule
Jul 1, 1994	Jul 31, 1994		Other	No	No	—	—	—	Archived	Jul 31, 1994	Miscellaneous Other Rules
Jul 1, 1993	Feb 18, 1994	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Feb 18, 1994	Lead and Copper Rule
Jul 1, 1993	Feb 18, 1994	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Feb 18, 1994	Lead and Copper Rule
Jul 1, 1993	Feb 18, 1994	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Feb 18, 1994	Lead and Copper Rule
Jun 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Jan 1, 1993	Dec 31, 1993	Ethylbenzene	MR	No	Yes	—	0.7 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	1,2,4-Trichlorobenzene	MR	No	Yes	—	0.07 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	1,2,4-Trichlorobenzene	MR	No	Yes	—	0.07 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	p-Dichlorobenzene	MR	No	Yes	—	0.075 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	p-Dichlorobenzene	MR	No	Yes	—	0.075 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Xylenes, Total	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Xylenes, Total	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Carbon tetrachloride	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Carbon tetrachloride	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	1,2-Dichloroethane	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	1,2-Dichloroethane	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Ethylbenzene	MR	No	Yes	—	0.7 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Toluene	MR	No	Yes	—	1 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Trichloroethylene	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Trichloroethylene	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Benzene	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Benzene	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	1,2-Dichloropropane	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	o-Dichlorobenzene	MR	No	Yes	—	0.6 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	o-Dichlorobenzene	MR	No	Yes	—	0.6 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	1,1,2-Trichloroethane	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Vinyl chloride	MR	No	Yes	—	0.002 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Dec 31, 1993	Vinyl chloride	MR	No	Yes	—	0.002 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Jan 1, 1993	Jan 31, 1993	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Jan 31, 1993	Total Coliform Rule
Jan 1, 1993	Dec 31, 1993	Toluene	MR	No	Yes	—	1 mg/L	—	Resolved	Dec 31, 1993	Volatile Organic Chemicals
Apr 1, 1992	Apr 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 1992	Total Coliform Rule
Apr 1, 1992	Apr 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 1992	Total Coliform Rule
Apr 1, 1992	Apr 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 1992	Total Coliform Rule
Mar 1, 1992	Mar 31, 1992	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Mar 31, 1992	Total Coliform Rule
Mar 1, 1992	Mar 31, 1992	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Mar 31, 1992	Total Coliform Rule
May 1, 1991	May 31, 1991	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	May 31, 1991	Total Coliform Rule
Jan 30, 1988	Jan 29, 1991	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jan 29, 1991	Nitrate Rule
Jan 30, 1988	Jan 29, 1991	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Jan 29, 1991	Arsenic Rule
Jan 30, 1988	Jan 29, 1991	Arsenic	MR	No	Yes	—	0.010 mg/L	—	Resolved	Jan 29, 1991	Arsenic 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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