083090075 · Montana
ROCKY BOY'S RURAL WATER
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 24
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 24
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 24 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, RegularViolation 20601 · Styrene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20600 · Ethylbenzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20599 · Toluene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20598 · Benzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20597 · CHLOROBENZENE · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20596 · Tetrachloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20595 · 1,1,2-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20594 · Trichloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20593 · 1,2-Dichloropropane · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20592 · Carbon tetrachloride · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20591 · 1,1,1-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20590 · 1,2-Dichloroethane · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20589 · trans-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20588 · 1,1-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20587 · Vinyl chloride · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20586 · p-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20585 · o-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20584 · DICHLOROMETHANE · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20583 · Xylenes, Total · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20582 · cis-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20581 · 1,2,4-Trichlorobenzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported June 29, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 838 January 13, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20579 · Nitrite · Nitrate RuleNoncompliance period start July 1, 2025 · period end September 30, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 835 April 6, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20574 · Asbestos · Inorganic ChemicalsNoncompliance period start October 1, 2021 · period end December 31, 2021 · first reported June 28, 2022 · EPA return-to-compliance field December 31, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 830 March 29, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 20573 · Asbestos · Inorganic ChemicalsNoncompliance period start July 1, 2021 · period end September 30, 2021 · first reported March 15, 2022 · EPA return-to-compliance field September 30, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 830 March 29, 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