WALNUT PARK
South Dakota - Community Water System - PWSID: SD4600316
System Information
| PWSID | SD4600316 |
| System Name | WALNUT PARK |
| 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 | Feb 13, 1979 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | South Dakota |
| City | SPEARFISH |
| ZIP Code | 57783 |
| Address | 5118 AIRPORT ROAD |
| Organization | WALNUT PARK |
| Phone | - |
Population & Service
| Population Served | 180 |
| Service Connections | 72 |
Drinking Water Violations (219)
This water system has 219 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Feb 11, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Feb 11, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Feb 11, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Feb 11, 2025 | - | |
| Feb 1, 2019 | - | TT | Yes | No | - | - | - | Resolved | Jun 21, 2019 | - | |
| Feb 1, 2019 | - | TT | Yes | No | - | - | - | Resolved | Jun 21, 2019 | - | |
| Oct 2, 2018 | - | TT | Yes | No | - | - | - | Resolved | Jul 30, 2019 | - | |
| Oct 2, 2018 | - | TT | Yes | No | - | - | - | Resolved | Jul 30, 2019 | - | |
| May 16, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 30, 2018 | - | |
| May 16, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 30, 2018 | - | |
| May 1, 2018 | May 31, 2018 | MON | No | Yes | - | - | - | Resolved | May 31, 2018 | - | |
| May 1, 2018 | May 31, 2018 | MON | No | Yes | - | - | - | Resolved | May 31, 2018 | - | |
| May 1, 2018 | May 31, 2018 | MON | No | Yes | - | - | - | Resolved | May 31, 2018 | - | |
| Apr 1, 2018 | Jun 30, 2018 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2018 | - | |
| Apr 1, 2018 | Jun 30, 2018 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2018 | - | |
| Apr 1, 2018 | Jun 30, 2018 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2018 | - | |
| May 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | Jun 9, 2017 | - | |
| May 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | Jun 9, 2017 | - | |
| Aug 19, 2016 | - | TT | Yes | No | - | - | - | Resolved | Aug 26, 2019 | - | |
| Aug 19, 2016 | - | TT | Yes | No | - | - | - | Resolved | Aug 26, 2019 | - | |
| Feb 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Apr 28, 2016 | - | |
| Feb 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Apr 28, 2016 | - | |
| Sep 1, 2013 | Sep 30, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2013 | - | |
| Sep 1, 2013 | Sep 30, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2013 | - | |
| Sep 1, 2013 | Sep 30, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2013 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Feb 1, 2013 | - | TT | Yes | No | - | - | - | Resolved | Mar 18, 2013 | - | |
| Feb 1, 2013 | - | TT | Yes | No | - | - | - | Resolved | Mar 18, 2013 | - | |
| May 1, 2010 | - | TT | Yes | No | - | - | - | Resolved | Jun 7, 2010 | - | |
| May 1, 2010 | - | TT | Yes | No | - | - | - | Resolved | Jun 7, 2010 | - | |
| Jul 17, 2007 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Jul 16, 2007 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Jul 15, 2007 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Jul 14, 2007 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Jul 13, 2007 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Jul 12, 2007 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Feb 8, 2007 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Nov 5, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Nov 5, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Nov 4, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Nov 4, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Nov 3, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Nov 3, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 5, 2008 | - | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2006 | - | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2006 | - | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2006 | - | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2006 | - | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2006 | - | |
| Oct 1, 2006 | - | MR | No | No | - | TT | - | Resolved | Sep 27, 2007 | - |
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.