MT0000274 · Montana
LIBBY CITY OF
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 25
- EPA health-based flag
- 4
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 21
Counties listed by EPA · Lincoln 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 25 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.
EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 986353 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start December 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483683 February 10, 2026 Resolving State Compliance achieved 4483680 February 13, 2026 Informal State Violation/Reminder Notice 4483681 February 13, 2026 Informal State Public Notification requested EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 986352 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start March 1, 2022 · period end March 31, 2022 · first reported September 22, 2023 · EPA return-to-compliance field March 31, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483672 April 25, 2022 Informal State Violation/Reminder Notice 4483673 April 25, 2022 Informal State Public Notification requested 4483679 May 10, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Treatment Technique (SWTR and GWR)Violation 986351 · Long Term 2 Enhanced Surface Water Treatment Rule · Long Term 2 Enhanced Surface Water Treatment RuleNoncompliance period start March 1, 2022 · period end March 31, 2022 · first reported September 22, 2023 · EPA return-to-compliance field March 31, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483672 April 25, 2022 Informal State Violation/Reminder Notice 4483673 April 25, 2022 Informal State Public Notification requested 4483679 May 10, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 986329 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start October 1, 2021 · period end October 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field October 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483669 November 15, 2021 Informal State Violation/Reminder Notice 4483670 November 15, 2021 Informal State Public Notification requested 4483678 December 10, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986350 · Styrene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986349 · Ethylbenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986348 · Toluene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986347 · Benzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986346 · CHLOROBENZENE · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986345 · Tetrachloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986344 · 1,1,2-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986343 · Trichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986342 · 1,2-Dichloropropane · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986341 · Carbon tetrachloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986340 · 1,1,1-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986339 · 1,2-Dichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986338 · trans-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986337 · 1,1-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986336 · Vinyl chloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986335 · p-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986334 · o-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986333 · DICHLOROMETHANE · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986332 · Xylenes, Total · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986331 · cis-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 986330 · 1,2,4-Trichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4483675 January 21, 2022 Informal State Violation/Reminder Notice 4483676 January 21, 2022 Informal State Public Notification requested 4483677 November 15, 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