HERMOSA, SD · Custer County
HERMOSA-NEW SYSTEM Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of February 1, 2014. 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 Custer 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)
- SD4602268
- System type
- Community Water System
- Population served
- 400
- Service connections
- 194
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Maximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
April 1, 2013 – June 30, 2013
ResolvedMaximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
July 1, 2011 – September 30, 2011
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2013 – June 30, 2013 | Maximum Contaminant Level Violation, Average | Combined Radium (-226 and -228) | Health-based | Resolved |
| July 1, 2011 – September 30, 2011 | Maximum Contaminant Level Violation, Average | Combined Radium (-226 and -228) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- December 26, 2013State Public Notification requested96 linked violations
Last known contact on file (system is inactive)
HERMOSA-NEW SYSTEM
6052554291
HERMOSA, SD 57744