PIEDMONT, SD · Pennington County
TERRA COTTA ESTATES Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of October 1, 2017. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Pennington County, SD.
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)
- SD4602306
- System type
- Community Water System
- Population served
- 75
- Service connections
- 30
- Ownership
- privately owned
- Water source
- groundwater (wells)
Violation history
Maximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
November 1, 2014 – November 30, 2014
ResolvedMaximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
October 1, 2014 – December 31, 2014
ResolvedMonitoring and Reporting (DBP)
—Chlorine
January 1, 2014 – March 31, 2014
ResolvedMonitoring and Reporting (DBP)
—Chlorine
July 1, 2013 – September 30, 2013
ResolvedMaximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
July 1, 2013 – September 30, 2013
ResolvedMonitoring and Reporting (DBP)
—Chlorine
January 1, 2013 – March 31, 2013
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| November 1, 2014 – November 30, 2014 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| October 1, 2014 – December 31, 2014 | Maximum Contaminant Level Violation, Average | Combined Radium (-226 and -228) | Health-based | Resolved |
| January 1, 2014 – March 31, 2014 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| July 1, 2013 – September 30, 2013 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| July 1, 2013 – September 30, 2013 | Maximum Contaminant Level Violation, Average | Combined Radium (-226 and -228) | Health-based | Resolved |
| January 1, 2013 – March 31, 2013 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- October 19, 2017State Compliance achieved8 linked violations
- June 30, 2017State Public Notification received19 linked violations
- April 3, 2017State Public Notification received20 linked violations
Last known contact on file (system is inactive)
TERRA COTTA ESTATES
6053917483
PIEDMONT, SD 57769