MT0005232 · Montana
RIDGEVIEW SUBDIVISION PHASE ONE
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 6
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 6
Counties listed by EPA · Yellowstone 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 29 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Unaddressed by formal action
Initial Tap Sampling for Pb and CuViolation 6 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2026 · first reported September 24, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 21 July 27, 2026 Informal State Violation/Reminder Notice 22 July 27, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 5 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 1, 2026 · period end June 30, 2026 · first reported August 24, 2026 · EPA return-to-compliance field June 30, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 17 July 16, 2026 Informal State Violation/Reminder Notice 18 July 16, 2026 Informal State Public Notification requested 20 July 16, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 4 · Revised Total Coliform Rule · Revised Total Coliform 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 13 June 22, 2026 Informal State Violation/Reminder Notice 14 June 22, 2026 Informal State Public Notification requested 16 June 22, 2026 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, 2026 · period end April 30, 2026 · first reported June 29, 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 10 May 14, 2026 Informal State Public Notification requested 12 May 14, 2026 Resolving State Compliance achieved 9 May 14, 2026 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 1, 2026 · period end March 31, 2026 · first reported May 27, 2026 · EPA return-to-compliance field March 31, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5 April 17, 2026 Informal State Violation/Reminder Notice 6 April 17, 2026 Informal State Public Notification requested 8 July 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 1 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start February 1, 2026 · period end February 28, 2026 · first reported May 27, 2026 · EPA return-to-compliance field February 28, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1 March 20, 2026 Informal State Violation/Reminder Notice 2 March 20, 2026 Informal State Public Notification requested 4 July 30, 2026 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