084690478 · South Dakota
WOUNDED KNEE WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 8
- EPA health-based flag
- 2
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 6
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 7 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 365 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 51136 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end September 15, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 15, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9352 September 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 51135 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end September 15, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 15, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9352 September 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 51133 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported December 18, 2024 · EPA return-to-compliance field December 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9353 October 29, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 51132 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported December 18, 2024 · EPA return-to-compliance field December 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9353 October 29, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 51129 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start September 29, 2022 · period end October 18, 2022 · first reported November 16, 2022 · EPA return-to-compliance field October 18, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9341 October 18, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 51130 · Long Term 2 Enhanced Surface Water Treatment Rule · Long Term 2 Enhanced Surface Water Treatment RuleNoncompliance period start September 3, 2022 · period end August 15, 2025 · first reported February 16, 2023 · EPA return-to-compliance field August 15, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9347 August 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Archived
Monitoring, RegularViolation 51131 · Asbestos · Inorganic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported September 24, 2024 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 51126 · Groundwater Rule · Ground Water RuleNoncompliance period start March 1, 2019 · period end October 19, 2023 · first reported February 11, 2020 · EPA return-to-compliance field October 19, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9346 October 19, 2023 Resolving State Compliance achieved
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