MT0000368 · Montana

TAMARACK COURT

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 7
EPA health-based flag: 3
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 4

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 7 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.

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 738920 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 1, 2024 · period end October 31, 2024 · first reported December 19, 2024 · EPA return-to-compliance field October 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5397222	December 10, 2024	Resolving	State Compliance achieved
5397219	December 14, 2024	Informal	State Violation/Reminder Notice
5397220	December 14, 2024	Informal	State Public Notification requested

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 738919 · Groundwater Rule · Ground Water Rule

Noncompliance period start July 1, 2024 · period end July 31, 2024 · first reported September 19, 2024 · EPA return-to-compliance field July 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5397215	August 21, 2024	Informal	State Violation/Reminder Notice
5397216	August 21, 2024	Informal	State Public Notification requested
5397218	September 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 738918 · Groundwater Rule · Ground Water Rule

Noncompliance period start March 1, 2024 · period end March 31, 2024 · first reported May 16, 2024 · EPA return-to-compliance field March 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5397211	April 24, 2024	Informal	State Violation/Reminder Notice
5397212	April 24, 2024	Informal	State Public Notification requested
5397214	May 10, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 738917 · Groundwater Rule · Ground Water Rule

Noncompliance period start December 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
5397206	February 2, 2024	Informal	State Violation/Reminder Notice
5397207	February 2, 2024	Informal	State Public Notification requested
5397209	February 8, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 738916 · Groundwater Rule · Ground Water Rule

Noncompliance period start June 1, 2023 · period end June 30, 2023 · first reported September 22, 2023 · EPA return-to-compliance field June 30, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5397202	July 28, 2023	Informal	State Violation/Reminder Notice
5397203	July 28, 2023	Informal	State Public Notification requested
5397205	August 3, 2023	Resolving	State Compliance achieved
5397204	August 15, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 738915 · Groundwater Rule · Ground Water Rule

Noncompliance period start August 1, 2022 · period end August 31, 2022 · first reported September 22, 2023 · EPA return-to-compliance field August 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5397198	October 7, 2022	Informal	State Violation/Reminder Notice
5397199	October 7, 2022	Informal	State Public Notification requested
5397201	October 10, 2022	Resolving	State Compliance achieved
5397200	November 9, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 738914 · Groundwater Rule · Ground Water Rule

Noncompliance 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
5397194	August 10, 2022	Informal	State Violation/Reminder Notice
5397195	August 10, 2022	Informal	State Public Notification requested
5397197	August 10, 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