YANKTON
South Dakota — Community Water System — PWSID: SD4600423
System Information
| PWSID | SD4600423 |
| System Name | YANKTON |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | South Dakota |
| City | YANKTON |
| ZIP Code | 57078 |
| Address | PO BOX 176 |
| Organization | YANKTON |
| Phone | 6056685272 |
Population & Service
| Population Served | 15,411 |
| Service Connections | 5,500 |
Drinking Water Violations (91)
This water system has 91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | — | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | — | Resolved | Mar 31, 2020 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .104 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .104 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .104 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | .099 MG/L | 0.080 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | — | Resolved | Jun 30, 2016 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | — | Resolved | Jun 30, 2016 | — | |
| Apr 1, 2016 | Jun 30, 2016 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | — | Resolved | Jun 30, 2016 | — | |
| Feb 1, 2011 | — | TT | Yes | No | — | — | — | Resolved | Apr 15, 2011 | — | |
| Feb 1, 2011 | — | TT | Yes | No | — | — | — | Resolved | Apr 15, 2011 | — | |
| Feb 1, 2010 | — | TT | Yes | No | — | — | — | Resolved | Apr 19, 2010 | — | |
| Feb 1, 2010 | — | TT | Yes | No | — | — | — | Resolved | Apr 19, 2010 | — | |
| Jan 2, 2010 | — | MR | No | No | — | — | — | Resolved | Sep 17, 2010 | — | |
| Jan 2, 2010 | — | MR | No | No | — | — | — | Resolved | Sep 17, 2010 | — | |
| Jan 2, 2010 | — | MR | No | No | — | — | — | Resolved | Sep 17, 2010 | — | |
| Jan 1, 2009 | Mar 31, 2009 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | — | Resolved | Mar 31, 2009 | — | |
| Jan 1, 2009 | Mar 31, 2009 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | — | Resolved | Mar 31, 2009 | — | |
| Jan 1, 2009 | Mar 31, 2009 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | — | Resolved | Mar 31, 2009 | — | |
| Oct 1, 2008 | Dec 31, 2008 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2008 | — | |
| Oct 1, 2008 | Dec 31, 2008 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2008 | — | |
| Oct 1, 2008 | Dec 31, 2008 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2008 | — | |
| Jul 1, 2008 | Sep 30, 2008 | MCL | Yes | No | .094 | 0.080 mg/L | — | Resolved | Sep 30, 2008 | — | |
| Jul 1, 2008 | Sep 30, 2008 | MCL | Yes | No | .094 | 0.080 mg/L | — | Resolved | Sep 30, 2008 | — | |
| Jul 1, 2008 | Sep 30, 2008 | MCL | Yes | No | .094 | 0.080 mg/L | — | Resolved | Sep 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MCL | Yes | No | .09 | 0.080 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MCL | Yes | No | .09 | 0.080 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MCL | Yes | No | .09 | 0.080 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MCL | Yes | No | .09 | 0.080 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Jan 1, 2008 | Mar 31, 2008 | MCL | Yes | No | .093 | 0.080 mg/L | — | Resolved | Mar 31, 2008 | — | |
| Jan 1, 2008 | Mar 31, 2008 | MCL | Yes | No | .093 | 0.080 mg/L | — | Resolved | Mar 31, 2008 | — | |
| Jan 1, 2008 | Mar 31, 2008 | MCL | Yes | No | .093 | 0.080 mg/L | — | Resolved | Mar 31, 2008 | — | |
| Jan 1, 2008 | Mar 31, 2008 | MCL | Yes | No | .093 | 0.080 mg/L | — | Resolved | Mar 31, 2008 | — |
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.