MT0000123 · Montana
RIVER GROVE ESTATES TR CT
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 7
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 5
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 6 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Archived
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 5368041 · Groundwater Rule · Ground Water RuleNoncompliance period start July 1, 2026 · period end July 31, 2026 · first reported September 24, 2026 · EPA return-to-compliance field July 31, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5524598 August 24, 2026 Informal State Violation/Reminder Notice 5524599 August 24, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 5368040 · Groundwater Rule · Ground Water RuleNoncompliance period start July 1, 2024 · period end July 31, 2024 · first reported September 19, 2024 · EPA return-to-compliance field July 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5524594 August 21, 2024 Informal State Violation/Reminder Notice 5524595 August 21, 2024 Informal State Public Notification requested 5524596 August 28, 2024 Informal State Public Notification received 5524597 September 4, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 5368039 · Groundwater Rule · Ground Water RuleNoncompliance period start October 1, 2023 · period end October 31, 2023 · first reported December 20, 2023 · EPA return-to-compliance field October 31, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5524590 November 30, 2023 Informal State Violation/Reminder Notice 5524591 November 30, 2023 Informal State Public Notification requested 5524593 December 5, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 5368038 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 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 5524589 January 20, 2022 Resolving State Compliance achieved 5524586 February 3, 2022 Informal State Violation/Reminder Notice 5524587 February 3, 2022 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 5368037 · Groundwater Rule · Ground Water RuleNoncompliance period start March 1, 2021 · period end March 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field March 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5524582 April 21, 2021 Informal State Violation/Reminder Notice 5524583 April 21, 2021 Informal State Public Notification requested 5524585 May 7, 2021 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 5368027 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 1, 2012 · period end November 7, 2022 · first reported December 28, 2012 · EPA return-to-compliance field November 7, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5524548 June 21, 2012 Informal State Violation/Reminder Notice 5524561 November 7, 2022 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 5368026 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2012 · period end November 7, 2022 · first reported September 27, 2012 · EPA return-to-compliance field November 7, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5524542 June 21, 2012 Informal State Violation/Reminder Notice 5524543 June 21, 2012 Informal State Public Notification requested 5524560 November 7, 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