LARSSON'S CROOKED CREEK CG-NORTH WEL

South Dakota — Transient Non-Community — PWSID: SD4600527

System Information

PWSID	SD4600527
System Name	LARSSON'S CROOKED CREEK CG-NORTH WEL
System Type	Transient Non-Community
Water Source	Ground Water
Activity Status	Active
Owner Type	Private
EPA Region	08
Serves School	No
Wholesaler	No
First Reported	Mar 4, 1980
Last Reported	Dec 9, 2025

Location & Contact

State	South Dakota
City	BLACK HAWK
ZIP Code	57718
Address	11985 QUAAL ROAD
Organization	LARSSON'S CROOKED CREEK CG-NORTH WEL
Phone	—

Population & Service

Population Served	124
Service Connections	75

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
Jun 5, 2023	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Jun 20, 2023	Ground Water Rule
Jun 5, 2023	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Jun 20, 2023	Ground Water Rule
Jun 5, 2023	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Jun 20, 2023	Ground Water Rule
Nov 13, 2019	—	Public Notice	Other	No	No	—	—	—	Resolved	Jun 13, 2023	Public Notice Rule and Revised PN Rule
Oct 1, 2018	Oct 31, 2018	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Oct 31, 2018	Revised Total Coliform Rule
Oct 1, 2018	Oct 31, 2018	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Oct 31, 2018	Revised Total Coliform Rule
Oct 1, 2018	Oct 31, 2018	Revised Total Coliform Rule	MON	No	Yes	—	—	—	Resolved	Oct 31, 2018	Revised Total Coliform Rule
Aug 11, 2018	—	Public Notice	Other	No	No	—	—	—	Unaddressed	—	Public Notice Rule and Revised PN Rule
Jan 1, 2017	Dec 31, 2017	Nitrate	MCL	Yes	No	11 MG/L	10 mg/L	—	Resolved	Dec 31, 2017	Nitrate Rule
Jan 1, 2017	Dec 31, 2017	Nitrate	MCL	Yes	No	11 MG/L	10 mg/L	—	Resolved	Dec 31, 2017	Nitrate Rule
Oct 28, 2011	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Jun 14, 2012	Ground Water Rule
Jan 1, 2011	Dec 31, 2011	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2011	Nitrate Rule
Jan 1, 2011	Dec 31, 2011	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2011	Nitrate Rule
Jan 1, 2011	Dec 31, 2011	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2011	Nitrate Rule
Jan 1, 2011	Dec 31, 2011	Nitrate	MCL	Yes	No	11 MG/L	10 mg/L	—	Resolved	Dec 31, 2011	Nitrate Rule
Jan 1, 2011	Dec 31, 2011	Nitrate	MCL	Yes	No	11 MG/L	10 mg/L	—	Resolved	Dec 31, 2011	Nitrate Rule
Jan 1, 2010	Dec 31, 2010	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	—	Resolved	Dec 31, 2010	Nitrate Rule
Jan 1, 2010	Dec 31, 2010	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	—	Resolved	Dec 31, 2010	Nitrate Rule
Jan 1, 2010	Dec 31, 2010	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	—	Resolved	Dec 31, 2010	Nitrate Rule
Jan 1, 2010	Dec 31, 2010	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	—	Resolved	Dec 31, 2010	Nitrate Rule
Sep 7, 2009	—	Public Notice	Other	No	No	—	—	—	Resolved	May 5, 2010	Public Notice Rule and Revised PN Rule
Sep 7, 2009	—	Public Notice	Other	No	No	—	—	—	Resolved	May 5, 2010	Public Notice Rule and Revised PN Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2008	Dec 31, 2008	Nitrate	MCL	Yes	No	14	10 mg/L	—	Resolved	Dec 31, 2008	Nitrate Rule
Jan 1, 2008	Dec 31, 2008	Nitrate	MCL	Yes	No	14	10 mg/L	—	Resolved	Dec 31, 2008	Nitrate Rule
Jan 1, 2008	Dec 31, 2008	Nitrate	MCL	Yes	No	14	10 mg/L	—	Resolved	Dec 31, 2008	Nitrate Rule
Jan 1, 2008	Dec 31, 2008	Nitrate	MCL	Yes	No	14	10 mg/L	—	Resolved	Dec 31, 2008	Nitrate Rule
Sep 9, 2003	—	Public Notice	Other	No	No	—	—	—	Resolved	Dec 31, 2010	Public Notice Rule and Revised PN Rule
Aug 1, 2002	Aug 31, 2002	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2002	Total Coliform Rule
Aug 1, 2002	Aug 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Aug 31, 2002	Total Coliform Rule
Aug 1, 2002	Aug 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Aug 31, 2002	Total Coliform Rule
Aug 1, 2002	Aug 31, 2002	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2002	Total Coliform Rule
Jul 1, 1993	Jul 31, 1993	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Jul 31, 1993	Total Coliform Rule
Aug 1, 1991	Aug 31, 1991	Coliform (TCR)	MR	No	Yes	—	5% of samples	—	Archived	Aug 31, 1991	Total Coliform 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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