084690483 · South Dakota
WOLF CREEK WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 8
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 8
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 257 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 51532 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start June 1, 2025 · period end June 30, 2025 · first reported August 20, 2025 · EPA return-to-compliance field June 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11051 August 27, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 51534 · 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 11054 September 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 51533 · 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 11054 September 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 51530 · 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 11055 August 29, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 51529 · 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 11055 August 29, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 51528 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 30, 2023 · period end February 7, 2024 · first reported February 22, 2024 · EPA return-to-compliance field February 7, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11046 February 7, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 51526 · 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 11042 October 18, 2022 Resolving State Compliance achieved Monitoring or reporting · Archived
Monitoring, RegularViolation 51527 · 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 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