MT0005185 · Montana
HI-LINE COLONY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 28
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 28
Counties listed by EPA · Liberty 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 28 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 90 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Initial Tap Sampling for Pb and CuViolation 27 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2025 · period end August 11, 2025 · first reported September 23, 2025 · EPA return-to-compliance field August 11, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 16 July 21, 2025 Informal State Violation/Reminder Notice 17 July 21, 2025 Informal State Public Notification requested 18 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 9 · Di(2-ethylhexyl) adipate · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 8 · Dalapon · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 7 · Toxaphene · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 6 · Methoxychlor · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5 · BHC-GAMMA · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 4 · Endrin · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 30 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad RuleNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported September 24, 2026 · EPA return-to-compliance field June 30, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 29 July 21, 2025 Informal State Violation/Reminder Notice 30 July 21, 2025 Informal State Public Notification requested 31 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 3 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start April 1, 2025 · period end April 30, 2025 · first reported June 23, 2025 · EPA return-to-compliance field April 30, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 10 May 19, 2025 Informal State Public Notification requested 9 May 19, 2025 Informal State Violation/Reminder Notice 12 May 20, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 29 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad RuleNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported September 24, 2026 · EPA return-to-compliance field June 30, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 26 July 21, 2025 Informal State Violation/Reminder Notice 27 July 21, 2025 Informal State Public Notification requested 28 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 26 · Chlordane · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25 · Pentachlorophenol · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24 · Benzo(a)pyrene · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23 · HEXACHLOROBENZENE · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 22 · 2,4,5-TP · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 21 · 2,4-D · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20 · Heptachlor epoxide · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 19 · Heptachlor · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 18 · LASSO · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 17 · Atrazine · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 16 · Carbofuran · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 15 · Hexachlorocyclopentadiene · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 14 · Dinoseb · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 13 · Picloram · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 12 · Di(2-ethylhexyl) phthalate · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 11 · Simazine · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 10 · OXAMYL · Synthetic Organic ChemicalsNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 July 18, 2025 Informal State Violation/Reminder Notice 14 July 18, 2025 Informal State Public Notification requested 23 July 18, 2025 Informal State Violation/Reminder Notice 24 July 18, 2025 Informal State Public Notification requested 15 August 11, 2025 Resolving State Compliance achieved 25 August 11, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 1 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 1, 2025 · period end March 31, 2025 · first reported May 15, 2025 · EPA return-to-compliance field March 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1 April 16, 2025 Informal State Violation/Reminder Notice 2 April 16, 2025 Informal State Public Notification requested 4 April 16, 2025 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