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 | Mar 2, 2026 |
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 (39)
This water system has 39 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 | - | Other | No | No | - | - | - | Resolved | Jun 13, 2023 | - | |
| Oct 1, 2018 | Oct 31, 2018 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2018 | - | |
| Oct 1, 2018 | Oct 31, 2018 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2018 | - | |
| Oct 1, 2018 | Oct 31, 2018 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2018 | - | |
| May 8, 2015 | - | Other | No | No | - | - | - | Resolved | Jun 13, 2023 | - | |
| May 8, 2015 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Sep 1, 2014 | Sep 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jul 30, 2011 | - | TT | Yes | No | - | - | - | Resolved | Jun 14, 2012 | - | |
| Jul 30, 2011 | - | TT | Yes | No | - | - | - | Resolved | Jun 14, 2012 | - | |
| Aug 1, 2009 | - | Other | No | No | - | - | - | Resolved | May 5, 2010 | - | |
| Aug 1, 2009 | - | Other | No | No | - | - | - | Resolved | May 5, 2010 | - | |
| Jan 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 11 MG/L | 10 mg/L | - | Resolved | Dec 31, 2009 | - | |
| Jan 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 11 MG/L | 10 mg/L | - | Resolved | Dec 31, 2009 | - | |
| Jan 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 11 MG/L | 10 mg/L | - | Resolved | Dec 31, 2009 | - | |
| Jan 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 11 MG/L | 10 mg/L | - | Resolved | Dec 31, 2009 | - | |
| Jan 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 11 MG/L | 10 mg/L | - | Resolved | Dec 31, 2009 | - | |
| Jan 1, 2008 | Dec 31, 2008 | MCL | Yes | No | 11 | 10 mg/L | - | Resolved | Dec 31, 2008 | - | |
| Jan 1, 2008 | Dec 31, 2008 | MCL | Yes | No | 11 | 10 mg/L | - | Resolved | Dec 31, 2008 | - | |
| Jan 1, 2008 | Dec 31, 2008 | MCL | Yes | No | 11 | 10 mg/L | - | Resolved | Dec 31, 2008 | - | |
| Jan 1, 2008 | Dec 31, 2008 | MCL | Yes | No | 11 | 10 mg/L | - | Resolved | Dec 31, 2008 | - | |
| Jul 1, 2002 | Jul 31, 2002 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2002 | - | |
| Jul 1, 2002 | Jul 31, 2002 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2002 | - | |
| Jul 1, 2002 | Jul 31, 2002 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2002 | - | |
| Jul 1, 2002 | Jul 31, 2002 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2002 | - | |
| Jul 1, 2002 | Jul 31, 2002 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2002 | - | |
| Jul 1, 2002 | Jul 31, 2002 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2002 | - | |
| Aug 1, 1998 | Aug 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1998 | - | |
| Aug 1, 1998 | Aug 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1998 | - | |
| Aug 1, 1998 | Aug 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1998 | - | |
| Aug 1, 1998 | Aug 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1998 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1995 | Dec 31, 1997 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1995 | Dec 31, 1997 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 1997 | - |
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.