NEW UNDERWOOD
South Dakota — Community Water System — PWSID: SD4600224
System Information
| PWSID | SD4600224 |
| System Name | NEW UNDERWOOD |
| 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 | NEW UNDERWOOD |
| ZIP Code | 57761 |
| Address | PO BOX 278 |
| Organization | NEW UNDERWOOD |
| Phone | 6057546777 |
Population & Service
| Population Served | 679 |
| Service Connections | 269 |
Drinking Water Violations (144)
This water system has 144 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 1, 2022 | Oct 31, 2022 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Oct 31, 2022 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2022 | — | |
| May 26, 2013 | — | Other | No | No | — | — | — | Resolved | Aug 24, 2015 | — | |
| May 26, 2013 | — | Other | No | No | — | — | — | Resolved | Aug 24, 2015 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 7 PCI/L | 5 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 7 PCI/L | 5 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 20 PCI/L | 15 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 20 PCI/L | 15 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 7 PCI/L | 5 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 20 PCI/L | 15 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 20 PCI/L | 15 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 20 PCI/L | 15 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 7 PCI/L | 5 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Apr 1, 2010 | Jun 30, 2010 | MCL | Yes | No | 7 PCI/L | 5 pCi/L | — | Resolved | Jun 30, 2010 | — | |
| Jan 1, 2010 | Mar 31, 2010 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Mar 31, 2010 | — | |
| Jan 1, 2010 | Mar 31, 2010 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Mar 31, 2010 | — | |
| Jan 1, 2010 | Mar 31, 2010 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Mar 31, 2010 | — | |
| Jan 1, 2010 | Mar 31, 2010 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Mar 31, 2010 | — | |
| Jan 1, 2010 | Mar 31, 2010 | MCL | Yes | No | 32 PCI/L | 15 pCi/L | — | Resolved | Mar 31, 2010 | — | |
| Jan 1, 2010 | Mar 31, 2010 | MCL | Yes | No | 32 PCI/L | 15 pCi/L | — | Resolved | Mar 31, 2010 | — | |
| Jan 1, 2010 | Mar 31, 2010 | MCL | Yes | No | 32 PCI/L | 15 pCi/L | — | Resolved | Mar 31, 2010 | — | |
| Jan 1, 2010 | Mar 31, 2010 | MCL | Yes | No | 32 PCI/L | 15 pCi/L | — | Resolved | Mar 31, 2010 | — | |
| Oct 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 29 PCI/L | 15 pCi/L | — | Resolved | Dec 31, 2009 | — | |
| Oct 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 29 PCI/L | 15 pCi/L | — | Resolved | Dec 31, 2009 | — | |
| Oct 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 29 PCI/L | 15 pCi/L | — | Resolved | Dec 31, 2009 | — | |
| Oct 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 29 PCI/L | 15 pCi/L | — | Resolved | Dec 31, 2009 | — | |
| Oct 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Dec 31, 2009 | — | |
| Oct 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Dec 31, 2009 | — | |
| Oct 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Dec 31, 2009 | — | |
| Oct 1, 2009 | Dec 31, 2009 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Dec 31, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | 28 PCI/L | 15 pCi/L | — | Resolved | Sep 30, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Sep 30, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Sep 30, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | 28 PCI/L | 15 pCi/L | — | Resolved | Sep 30, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Sep 30, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | 10 PCI/L | 5 pCi/L | — | Resolved | Sep 30, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | 28 PCI/L | 15 pCi/L | — | Resolved | Sep 30, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | 28 PCI/L | 15 pCi/L | — | Resolved | Sep 30, 2009 | — | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | 8 PCI/L | 5 pCi/L | — | Resolved | Jun 30, 2009 | — | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | 25 PCI/L | 15 pCi/L | — | Resolved | Jun 30, 2009 | — | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | 25 PCI/L | 15 pCi/L | — | Resolved | Jun 30, 2009 | — | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | 25 PCI/L | 15 pCi/L | — | Resolved | Jun 30, 2009 | — | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | 25 PCI/L | 15 pCi/L | — | Resolved | Jun 30, 2009 | — | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | 8 PCI/L | 5 pCi/L | — | Resolved | Jun 30, 2009 | — | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | 8 PCI/L | 5 pCi/L | — | Resolved | Jun 30, 2009 | — | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | 8 PCI/L | 5 pCi/L | — | Resolved | Jun 30, 2009 | — | |
| Jan 1, 2009 | Mar 31, 2009 | MR | No | Yes | — | 1 mg/L | — | Resolved | Mar 31, 2009 | — |
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.