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083090011 · Montana

CROW AGENCY WATER SYSTEM

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown
61
EPA health-based flag
10
Health-based records unresolved in this snapshot
2
Monitoring and reporting records
49

Open the EPA system record

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 54 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 364 days. The interval uses the reporting periods and dates on file.

  1. EPA health-based flag · Unaddressed by formal action

    Failure To Address DeficiencyViolation 19807 · Groundwater Rule · Ground Water Rule

    Noncompliance period start October 10, 2025 · first reported June 29, 2026

    No linked action row appears in the records shown.

  2. EPA health-based flag · Unaddressed by formal action

    Failure To Address DeficiencyViolation 19808 · Groundwater Rule · Ground Water Rule

    Noncompliance period start August 16, 2025 · first reported June 29, 2026

    No linked action row appears in the records shown.

  3. Monitoring or reporting · Archived

    Monitoring and Reporting (DBP)Violation 19814 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start June 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.

  4. Monitoring or reporting · Archived

    Monitoring and Reporting (DBP)Violation 19813 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start June 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.

  5. Monitoring or reporting · Archived

    Monitoring and Reporting (DBP)Violation 19811 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start April 1, 2026 · period end April 30, 2026 · first reported August 27, 2026 · EPA return-to-compliance field April 30, 2026

    No linked action row appears in the records shown.

  6. Monitoring or reporting · Archived

    Monitoring and Reporting (DBP)Violation 19809 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start April 1, 2026 · period end April 30, 2026 · first reported August 27, 2026 · EPA return-to-compliance field April 30, 2026

    No linked action row appears in the records shown.

  7. Other or unclassified · Unaddressed by formal action

    Record KeepingViolation 19805 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

    Noncompliance period start September 23, 2025 · first reported March 2, 2026

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1641November 19, 2025InformalState Violation/Reminder Notice

  8. Monitoring or reporting · Resolved

    Monitoring, Turbidity (Enhanced SWTR)Violation 19804 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

    Noncompliance period start July 1, 2025 · period end July 31, 2025 · first reported November 17, 2025 · EPA return-to-compliance field July 31, 2025

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1640October 1, 2025ResolvingState Compliance achieved

  9. Monitoring or reporting · Resolved

    Monitoring, Turbidity (Enhanced SWTR)Violation 19803 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

    Noncompliance period start May 1, 2025 · period end May 31, 2025 · first reported August 20, 2025 · EPA return-to-compliance field May 31, 2025

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1637July 15, 2025ResolvingState Compliance achieved

  10. Monitoring or reporting · Resolved

    Monitoring, Turbidity (Enhanced SWTR)Violation 19802 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

    Noncompliance period start February 1, 2025 · period end February 28, 2025 · first reported June 24, 2025 · EPA return-to-compliance field February 28, 2025

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1634April 9, 2025ResolvingState Compliance achieved

  11. Monitoring or reporting · Resolved

    Monitoring, Turbidity (Enhanced SWTR)Violation 19800 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

    Noncompliance period start January 1, 2025 · period end January 31, 2025 · first reported June 24, 2025 · EPA return-to-compliance field January 31, 2025

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1634April 9, 2025ResolvingState Compliance achieved

  12. Monitoring or reporting · Resolved

    Monitoring, Turbidity (Enhanced SWTR)Violation 19799 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

    Noncompliance period start December 1, 2024 · period end December 31, 2024 · first reported February 24, 2025 · EPA return-to-compliance field December 31, 2024

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1634April 9, 2025ResolvingState Compliance achieved

  13. Monitoring or reporting · Resolved

    Monitoring, Turbidity (Enhanced SWTR)Violation 19798 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

    Noncompliance period start November 1, 2024 · period end November 30, 2024 · first reported February 24, 2025 · EPA return-to-compliance field November 30, 2024

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1634April 9, 2025ResolvingState Compliance achieved

  14. Other or unclassified · Resolved

    Consumer Confidence Report Complete Failure to ReportViolation 19740 · Consumer Confidence Rule · Consumer Confidence Rule

    Noncompliance period start July 1, 2023 · period end August 29, 2023 · first reported November 15, 2023 · EPA return-to-compliance field August 29, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1608August 29, 2023ResolvingState Compliance achieved

  15. Monitoring or reporting · Resolved

    Monitoring, Turbidity (Enhanced SWTR)Violation 19739 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

    Noncompliance period start June 1, 2023 · period end June 30, 2023 · first reported September 11, 2023 · EPA return-to-compliance field June 30, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1598August 1, 2023ResolvingState Compliance achieved

  16. Monitoring or reporting · Resolved

    Monitoring and Reporting (DBP)Violation 19748 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported September 11, 2023 · EPA return-to-compliance field June 30, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1609September 28, 2023ResolvingState Compliance achieved

  17. Monitoring or reporting · Resolved

    Monitoring and Reporting (DBP)Violation 19747 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported September 11, 2023 · EPA return-to-compliance field June 30, 2023

    2 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1609September 28, 2023ResolvingState Compliance achieved
    1614September 28, 2023ResolvingState Compliance achieved

  18. Monitoring or reporting · Resolved

    Monitoring, Turbidity (Enhanced SWTR)Violation 19738 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

    Noncompliance period start March 1, 2023 · period end March 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1598August 1, 2023ResolvingState Compliance achieved

  19. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19789 · Chromium · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  20. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19788 · Nickel · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  21. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19787 · Barium · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  22. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19785 · CYANIDE · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  23. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19784 · Beryllium, Total · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  24. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19783 · Arsenic · Arsenic Rule

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  25. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19782 · Cadmium · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  26. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19781 · Thallium, Total · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  27. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19780 · Selenium · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  28. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19779 · Antimony, Total · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  29. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19778 · Mercury · Inorganic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1623April 19, 2024ResolvingState Compliance achieved

  30. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19777 · Styrene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  31. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19776 · Ethylbenzene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  32. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19775 · Toluene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  33. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19774 · Benzene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  34. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19773 · CHLOROBENZENE · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  35. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19772 · Tetrachloroethylene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  36. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19771 · 1,1,2-Trichloroethane · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  37. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19770 · Trichloroethylene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  38. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19769 · 1,2-Dichloropropane · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  39. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19768 · Carbon tetrachloride · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  40. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19767 · 1,1,1-Trichloroethane · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  41. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19766 · 1,2-Dichloroethane · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  42. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19765 · trans-1,2-Dichloroethylene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  43. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19764 · 1,1-Dichloroethylene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  44. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19763 · Vinyl chloride · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  45. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19762 · p-Dichlorobenzene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  46. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19761 · o-Dichlorobenzene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  47. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19760 · DICHLOROMETHANE · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  48. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19759 · Xylenes, Total · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  49. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19758 · cis-1,2-Dichloroethylene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  50. Monitoring or reporting · Resolved

    Monitoring, RegularViolation 19757 · 1,2,4-Trichlorobenzene · Volatile Organic Chemicals

    Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 27, 2024 · EPA return-to-compliance field December 31, 2023

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1622April 17, 2024ResolvingState Compliance achieved

  51. Monitoring or reporting · Resolved

    Monitoring and Reporting (DBP)Violation 19736 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported June 28, 2022 · EPA return-to-compliance field March 31, 2022

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1593May 23, 2022ResolvingState Compliance achieved

  52. Monitoring or reporting · Resolved

    Monitoring and Reporting (DBP)Violation 19735 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported June 28, 2022 · EPA return-to-compliance field March 31, 2022

    2 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1593May 23, 2022ResolvingState Compliance achieved
    1613May 23, 2022ResolvingState Compliance achieved

  53. Monitoring or reporting · Resolved

    Lead Consumer NoticeViolation 19734 · Lead and Copper Rule · Lead and Copper Rule

    Noncompliance period start December 30, 2021 · period end March 7, 2022 · first reported March 15, 2022 · EPA return-to-compliance field March 7, 2022

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1586March 7, 2022ResolvingState Compliance achieved

  54. EPA health-based flag · Resolved

    Treatment Technique Precursor RemovalViolation 19733 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1584October 25, 2021ResolvingState Compliance achieved

  55. EPA health-based flag · Resolved

    Treatment Technique Precursor RemovalViolation 19731 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020

    2 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1581April 22, 2021FormalFederal Final Administrative Order issued
    1584October 25, 2021ResolvingState Compliance achieved

  56. EPA health-based flag · Resolved

    Treatment Technique Precursor RemovalViolation 19730 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020

    2 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1581April 22, 2021FormalFederal Final Administrative Order issued
    1584October 25, 2021ResolvingState Compliance achieved

  57. EPA health-based flag · Resolved

    Treatment Technique Precursor RemovalViolation 19729 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020

    3 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1581April 22, 2021FormalFederal Final Administrative Order issued
    1584October 25, 2021ResolvingState Compliance achieved
    1612October 25, 2021ResolvingState Compliance achieved

  58. EPA health-based flag · Resolved

    Treatment Technique Precursor RemovalViolation 19732 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start July 1, 2020 · period end September 30, 2020 · first reported March 31, 2021 · EPA return-to-compliance field September 30, 2020

    1 linked action
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1584October 25, 2021ResolvingState Compliance achieved

  59. EPA health-based flag · Resolved

    Treatment Technique Precursor RemovalViolation 19728 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start July 1, 2020 · period end September 30, 2020 · first reported March 31, 2021 · EPA return-to-compliance field September 30, 2020

    2 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1581April 22, 2021FormalFederal Final Administrative Order issued
    1584October 25, 2021ResolvingState Compliance achieved

  60. EPA health-based flag · Resolved

    Treatment Technique Precursor RemovalViolation 19727 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start July 1, 2020 · period end September 30, 2020 · first reported March 31, 2021 · EPA return-to-compliance field September 30, 2020

    2 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1581April 22, 2021FormalFederal Final Administrative Order issued
    1584October 25, 2021ResolvingState Compliance achieved

  61. EPA health-based flag · Resolved

    Treatment Technique Precursor RemovalViolation 19726 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

    Noncompliance period start July 1, 2020 · period end September 30, 2020 · first reported March 31, 2021 · EPA return-to-compliance field September 30, 2020

    3 linked actions
    Enforcement and resolution records linked by EPA
    Action IDDateCategoryEPA action type
    1581April 22, 2021FormalFederal Final Administrative Order issued
    1584October 25, 2021ResolvingState Compliance achieved
    1612October 25, 2021ResolvingState 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.

EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility