EPA public water records · 46033
Custer County, South Dakota
Find listed community water systems and their documented follow-up in federal fiscal 2026Q3.
- Systems with linked histories
- 6
- Systems with unresolved health-based records
- 2
- Of those, systems with a formally addressed health-based record
- 1
These counts cover the linked records shown here. A county listing can cover only part of the county or reflect a mailing location.
Find your water system
- BUFFALO GAPSD4600077 · South Dakota · 9 violation records · 0 unresolved health-based in this snapshot
- FAIRBURN WATER ASSOCIATIONSD4600877 · South Dakota · 10 violation records · 1 unresolved health-based in this snapshot
- HERMOSA WATER USERS ASSOCIATIONSD4602180 · South Dakota · 2 violation records · 0 unresolved health-based in this snapshot
- HERMOSA-OLD SYSTEMSD4600154 · South Dakota · 4 violation records · 0 unresolved health-based in this snapshot
- NORTH HERMOSA WUDSD4600329 · South Dakota · 3 violation records · 1 unresolved health-based in this snapshot
- ROCK RIDGE COURTSD4602209 · South Dakota · 32 violation records · 0 unresolved health-based in this snapshot
EPA data and scope
How to read the records
The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility