084690534 · South Dakota
LAKE ANDES TRIBAL HOUSING WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 23
- EPA health-based flag
- 3
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 20
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 20 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 651 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 11, 2026 · period end June 22, 2026 · first reported August 27, 2026 · EPA return-to-compliance field June 22, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 892 June 22, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 650 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start May 1, 2026 · period end May 31, 2026 · first reported August 27, 2026 · EPA return-to-compliance field May 31, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 888 June 22, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 649 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start May 1, 2026 · period end May 31, 2026 · first reported August 27, 2026 · EPA return-to-compliance field May 31, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 889 June 22, 2026 Resolving State Compliance achieved EPA health-based flag · Archived
Non-Acute MRDLViolation 654 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 27, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.EPA health-based flag · Archived
Non-Acute MRDLViolation 653 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 27, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.EPA health-based flag · Archived
Non-Acute MRDLViolation 652 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 27, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 647 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start August 1, 2025 · period end August 31, 2025 · first reported November 17, 2025 · EPA return-to-compliance field August 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 883 September 4, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 646 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start August 1, 2025 · period end August 31, 2025 · first reported November 17, 2025 · EPA return-to-compliance field August 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 879 September 22, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 641 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 1, 2024 · period end October 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field October 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 874 November 25, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 640 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start October 1, 2024 · period end October 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field October 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 876 December 11, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 638 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 1, 2024 · period end March 31, 2024 · first reported June 27, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 875 April 30, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 637 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start March 1, 2024 · period end March 31, 2024 · first reported June 27, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 858 May 13, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 643 · 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 882 August 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 642 · 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 882 August 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 634 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start September 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 855 November 3, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 633 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start September 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 854 November 8, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 632 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 11, 2023 · period end April 19, 2023 · first reported September 11, 2023 · EPA return-to-compliance field April 19, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 849 April 19, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 630 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start February 1, 2023 · period end February 28, 2023 · first reported May 16, 2023 · EPA return-to-compliance field February 28, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 846 April 17, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 628 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 1, 2021 · period end July 31, 2021 · first reported November 15, 2021 · EPA return-to-compliance field July 31, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 842 August 23, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 626 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start December 1, 2020 · period end February 28, 2021 · first reported June 17, 2021 · EPA return-to-compliance field February 28, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 843 January 7, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 625 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start December 1, 2020 · period end February 28, 2021 · first reported June 17, 2021 · EPA return-to-compliance field February 28, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 843 January 7, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 624 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end November 30, 2020 · first reported March 31, 2021 · EPA return-to-compliance field November 30, 2020
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 843 January 7, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 623 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end November 30, 2020 · first reported March 31, 2021 · EPA return-to-compliance field November 30, 2020
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 843 January 7, 2022 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