PINE RIDGE, SD · Shannon County
OST SANITATION AND MAINTENANCE Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of September 1, 1992. 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 Shannon County, SD.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)
- SD4690482
- System type
- Community Water System
- Population served
- 143
- Service connections
- 26
- Ownership
- not on record
- Water source
- groundwater (wells)
OST SANITATION AND MAINTENANCE is one of 583 community water systems in South Dakota in the 500 or fewer people size category, formerly serving 143 people from groundwater.
EPA's federal records list this system as inactive in 1992; the record below is historical.
As of August 1, 2026, EPA's published records contain no violations for this system.
Violation history
No violations on record for this system.
Enforcement actions
No enforcement actions on record for this system.
Last known contact on file (system is inactive)
Not on record
605-867-5458
PINE RIDGE, SD 57770