MT0000058 · Montana
ROCKY MOUNTAIN WUA
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 3
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 2
Counties listed by EPA · Jefferson 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 3 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 29 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 337024 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2026 · period end July 14, 2026 · first reported September 24, 2026 · EPA return-to-compliance field July 14, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 156260 July 2, 2026 Informal State Violation/Reminder Notice 156261 July 14, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 337023 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · 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 156259 July 16, 2025 Resolving State Compliance achieved 156256 July 18, 2025 Informal State Violation/Reminder Notice 156257 July 18, 2025 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 337022 · E. COLI · Ground Water RuleNoncompliance period start April 2, 2021 · period end September 25, 2023 · first reported September 22, 2023 · EPA return-to-compliance field September 25, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 156252 June 11, 2021 Informal State Violation/Reminder Notice 156253 June 11, 2021 Informal State Public Notification requested 156255 September 25, 2023 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