MT0004720 · Montana
NCMRWA NORTH HAVRE CWD LEG
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 5
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 5
Counties listed by EPA · Hill County, Montana
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 5 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
Monitoring of Treatment (SWTR-Filter)Violation 13 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start May 1, 2026 · period end May 31, 2026 · first reported August 24, 2026 · EPA return-to-compliance field May 31, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 29 July 6, 2026 Resolving State Compliance achieved 26 July 22, 2026 Informal State Violation/Reminder Notice 27 July 22, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 12 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start April 1, 2026 · period end April 30, 2026 · first reported August 24, 2026 · EPA return-to-compliance field April 30, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22 June 19, 2026 Informal State Violation/Reminder Notice 23 June 19, 2026 Informal State Public Notification requested 25 July 6, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 11 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start October 1, 2024 · period end October 31, 2024 · first reported December 19, 2024 · EPA return-to-compliance field October 31, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 18 December 6, 2024 Informal State Violation/Reminder Notice 19 December 6, 2024 Informal State Public Notification requested 21 December 6, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 9 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2024 · period end April 18, 2024 · first reported May 16, 2024 · EPA return-to-compliance field April 18, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 15 April 18, 2024 Informal State Violation/Reminder Notice 16 April 18, 2024 Informal State Public Notification requested 17 April 18, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2024 · period end April 18, 2024 · first reported May 16, 2024 · EPA return-to-compliance field April 18, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 15 April 18, 2024 Informal State Violation/Reminder Notice 16 April 18, 2024 Informal State Public Notification requested 17 April 18, 2024 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