084690532 · South Dakota
MISSION WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 9
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 9
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 9 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 353 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 40 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start September 1, 2025 · period end September 30, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 48 October 20, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 39 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start September 1, 2025 · period end September 30, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 49 October 8, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 36 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 11, 2024 · period end March 15, 2024 · first reported February 24, 2025 · EPA return-to-compliance field March 15, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 43 March 15, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 29 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2023 · period end December 20, 2023 · first reported May 16, 2023 · EPA return-to-compliance field December 20, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 36 December 20, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 32 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 1, 2022 · period end August 31, 2023 · first reported November 15, 2023 · EPA return-to-compliance field August 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 40 August 28, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 31 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 1, 2022 · period end August 31, 2023 · first reported November 15, 2023 · EPA return-to-compliance field August 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 39 August 28, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 27 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2022 · period end December 20, 2023 · first reported November 16, 2022 · EPA return-to-compliance field December 20, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 36 December 20, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 26 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 11, 2021 · period end October 28, 2021 · first reported March 15, 2022 · EPA return-to-compliance field October 28, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 24 October 28, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 25 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2021 · period end December 20, 2023 · first reported March 15, 2022 · EPA return-to-compliance field December 20, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 36 December 20, 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