LARSSON'S CROOKED CREEK CG-SOUTH WEL

South Dakota — Transient Non-Community — PWSID: SD4602171

System Information

PWSID	SD4602171
System Name	LARSSON'S CROOKED CREEK CG-SOUTH 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	Dec 27, 1996
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-SOUTH WEL
Phone	—

Population & Service

Population Served	52
Service Connections	26

Drinking Water Violations (28)

This water system has 28 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
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
May 8, 2015	—	Public Notice	Other	No	No	—	—	—	Resolved	Jun 13, 2023	Public Notice Rule and Revised PN Rule
Sep 1, 2014	Sep 30, 2014	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2014	Total Coliform Rule
Sep 1, 2014	Sep 30, 2014	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2014	Total Coliform Rule
Jan 1, 2014	Dec 31, 2014	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2014	Nitrate Rule
Jan 1, 2014	Dec 31, 2014	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2014	Nitrate Rule
Jan 1, 2014	Dec 31, 2014	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2014	Nitrate Rule
Jul 30, 2011	—	Groundwater Rule	TT	Yes	No	—	—	—	Resolved	Jun 14, 2012	Ground Water Rule
Aug 1, 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	11 MG/L	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MCL	Yes	No	11 MG/L	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2009	Dec 31, 2009	Nitrate	MCL	Yes	No	11 MG/L	10 mg/L	—	Resolved	Dec 31, 2009	Nitrate Rule
Jan 1, 2008	Dec 31, 2008	Nitrate	MCL	Yes	No	11	10 mg/L	—	Resolved	Dec 31, 2008	Nitrate Rule
Jan 1, 2008	Dec 31, 2008	Nitrate	MCL	Yes	No	11	10 mg/L	—	Resolved	Dec 31, 2008	Nitrate Rule
Jan 1, 2008	Dec 31, 2008	Nitrate	MCL	Yes	No	11	10 mg/L	—	Resolved	Dec 31, 2008	Nitrate Rule
Jan 1, 2008	Dec 31, 2008	Nitrate	MCL	Yes	No	11	10 mg/L	—	Resolved	Dec 31, 2008	Nitrate Rule
Jul 1, 2002	Jul 31, 2002	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 2002	Total Coliform Rule
Jul 1, 2002	Jul 31, 2002	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 2002	Total Coliform Rule
Jul 1, 2002	Jul 31, 2002	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 2002	Total Coliform Rule
Jul 1, 2002	Jul 31, 2002	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 2002	Total Coliform Rule
Jul 1, 2002	Jul 31, 2002	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 2002	Total Coliform Rule
Aug 1, 1998	Aug 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1998	Total Coliform Rule
Aug 1, 1998	Aug 31, 1998	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1998	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

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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