MT0004368 · Montana
RYANS LOT
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 10
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 6
Counties listed by EPA · Missoula 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 10 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 47.5 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 16661 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end July 17, 2025 · first reported September 23, 2025 · EPA return-to-compliance field July 17, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11657 July 31, 2024 Informal State Other 11654 July 17, 2025 Informal State Violation/Reminder Notice 11655 July 17, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 16659 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2024 · period end September 4, 2024 · first reported September 19, 2024 · EPA return-to-compliance field September 4, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11645 July 23, 2024 Informal State Violation/Reminder Notice 11647 July 31, 2024 Informal State Other 11648 July 31, 2024 Informal State Other 11646 September 4, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 16657 · Groundwater Rule · Ground Water RuleNoncompliance period start August 30, 2023 · period end May 9, 2025 · first reported September 22, 2023 · EPA return-to-compliance field May 9, 2025
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11637 September 5, 2023 Informal State Violation/Reminder Notice 11638 September 5, 2023 Informal State Violation/Reminder Notice 11639 September 5, 2023 Informal State Public Notification requested 11647 July 31, 2024 Informal State Other 11648 July 31, 2024 Informal State Other 11641 May 9, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Failure to Consult with StateViolation 16656 · Groundwater Rule · Ground Water RuleNoncompliance period start June 1, 2023 · period end May 9, 2025 · first reported September 22, 2023 · EPA return-to-compliance field May 9, 2025
8 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11630 June 12, 2023 Informal State Violation/Reminder Notice 11631 June 12, 2023 Informal State Violation/Reminder Notice 11632 June 12, 2023 Informal State Public Notification requested 11647 July 31, 2024 Informal State Other 11648 July 31, 2024 Informal State Other 11634 May 9, 2025 Resolving State Compliance achieved 11635 May 9, 2025 Resolving State Compliance achieved 11636 May 9, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 16658 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 15, 2024 · EPA return-to-compliance field December 31, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11642 January 24, 2024 Informal State Violation/Reminder Notice 11643 January 24, 2024 Informal State Public Notification requested 11644 February 8, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 16655 · Groundwater Rule · Ground Water RuleNoncompliance period start June 1, 2022 · period end June 30, 2022 · first reported September 22, 2023 · EPA return-to-compliance field June 30, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11626 August 10, 2022 Informal State Violation/Reminder Notice 11627 August 10, 2022 Informal State Public Notification requested 11629 August 10, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 16654 · Groundwater Rule · Ground Water RuleNoncompliance period start May 1, 2022 · period end May 31, 2022 · first reported September 22, 2023 · EPA return-to-compliance field May 31, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11622 June 15, 2022 Informal State Violation/Reminder Notice 11623 June 15, 2022 Informal State Public Notification requested 11624 June 24, 2022 Informal State Public Notification received 11625 August 10, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 16652 · Groundwater Rule · Ground Water RuleNoncompliance period start July 1, 2021 · period end July 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field July 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11614 August 13, 2021 Informal State Violation/Reminder Notice 11615 August 13, 2021 Informal State Public Notification requested 11617 September 13, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 16651 · Groundwater Rule · Ground Water RuleNoncompliance period start May 1, 2021 · period end May 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field May 31, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11610 June 16, 2021 Informal State Violation/Reminder Notice 11611 June 16, 2021 Informal State Public Notification requested 11612 June 29, 2021 Informal State Public Notification received 11613 June 29, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 16650 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start January 1, 2020 · period end December 31, 2020 · first reported February 16, 2021 · EPA return-to-compliance field December 31, 2020
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 11607 January 22, 2021 Informal State Violation/Reminder Notice 11608 January 22, 2021 Informal State Public Notification requested 11609 February 1, 2021 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