NEW UNDERWOOD, SD · Pennington County
NEW UNDERWOOD Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace South Dakota’s official records. Always confirm current status with South Dakota before making decisions based on this information.
System facts
- System ID (PWSID)
- SD4600224
- System type
- Community Water System
- Population served
- 679
- Service connections
- 269
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Monitoring and Reporting (DBP)
—Chlorine
October 1, 2022 – December 31, 2022
ResolvedMaximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
January 1, 2010 – March 31, 2010
ResolvedMaximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
July 1, 2009 – September 30, 2009
ResolvedMonitoring, Regular
—Combined Uranium
April 1, 2003 – June 30, 2003
ResolvedNotification, Public
—No contaminant on record
July 26, 1990 – August 25, 1990
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1976 – June 30, 1980
ArchivedMonitoring, Regular
—Combined Radium (-226 and -228)
July 1, 1976 – June 30, 1980
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2022 – December 31, 2022 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| January 1, 2010 – March 31, 2010 | Maximum Contaminant Level Violation, Average | Combined Radium (-226 and -228) | Health-based | Resolved |
| July 1, 2009 – September 30, 2009 | Maximum Contaminant Level Violation, Average | Combined Radium (-226 and -228) | Health-based | Resolved |
| April 1, 2003 – June 30, 2003 | Monitoring, Regular | Combined Uranium | — | Resolved |
| July 26, 1990 – August 25, 1990 | Notification, Public | — | — | Archived |
| July 1, 1976 – June 30, 1980 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| July 1, 1976 – June 30, 1980 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- March 29, 2011State Compliance achieved49 linked violations
- March 29, 2011State Compliance achieved14 linked violations
- April 13, 2010State Public Notification received51 linked violations
- March 22, 2010State Public Notification requested24 linked violations
- June 1, 1995State Compliance achieved12 linked violations
- May 1, 1994State Compliance achieved11 linked violations
Contact
NEW UNDERWOOD
6057546777
NEW UNDERWOOD, SD 57761