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MT0003932 · Montana

HIDDEN LAKE COLONY

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

Violation records shown: 13
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 10

Counties listed by EPA · Glacier County, Montana

Open the EPA system record

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 12 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.

Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 568275 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2026 · period end July 28, 2026 · first reported September 24, 2026 · EPA return-to-compliance field July 28, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
5440663 July 2, 2026 Informal State Violation/Reminder Notice
5440664 July 28, 2026 Resolving State Compliance achieved
Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Inadequate ReportingViolation 568274 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 1, 2025 · first reported January 5, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
5440661 October 6, 2025 Informal State Violation/Reminder Notice

Other or unclassified · Resolved

Consumer Confidence Report Inadequate ReportingViolation 568273 · Consumer Confidence Rule · Consumer Confidence Rule

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

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5440659	October 1, 2024	Informal	State Violation/Reminder Notice
5440660	October 1, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 568272 · Revised Total Coliform Rule · Revised Total Coliform 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
5440655	August 19, 2024	Informal	State Violation/Reminder Notice
5440656	August 19, 2024	Informal	State Public Notification requested
5440658	August 29, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 568271 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2024 · period end April 30, 2024 · first reported June 27, 2024 · EPA return-to-compliance field April 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5440651	May 20, 2024	Informal	State Violation/Reminder Notice
5440652	May 20, 2024	Informal	State Public Notification requested
5440654	May 29, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 568268 · Revised Total Coliform Rule · Revised Total Coliform 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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5440641	July 13, 2023	Informal	State Violation/Reminder Notice
5440642	July 13, 2023	Informal	State Public Notification requested
5440644	July 25, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 568270 · Antimony, Total · Inorganic Chemicals

Noncompliance period start April 1, 2023 · period end June 27, 2023 · first reported September 22, 2023 · EPA return-to-compliance field June 27, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5440650	June 27, 2023	Resolving	State Compliance achieved
5440648	July 17, 2023	Informal	State Violation/Reminder Notice
5440649	July 17, 2023	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 568269 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2023 · period end June 27, 2023 · first reported September 22, 2023 · EPA return-to-compliance field June 27, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5440647	June 27, 2023	Resolving	State Compliance achieved
5440645	July 17, 2023	Informal	State Violation/Reminder Notice
5440646	July 17, 2023	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 568267 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5440637	April 17, 2023	Informal	State Violation/Reminder Notice
5440638	April 17, 2023	Informal	State Public Notification requested
5440640	April 24, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 568266 · Antimony, Total · Inorganic Chemicals

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5440634	January 25, 2023	Informal	State Violation/Reminder Notice
5440635	January 25, 2023	Informal	State Public Notification requested
5440636	March 20, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Source Water (GWR)Violation 568265 · E. COLI · Ground Water Rule

Noncompliance period start September 22, 2022 · period end September 27, 2022 · first reported September 22, 2023 · EPA return-to-compliance field September 27, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5440633	September 27, 2022	Resolving	State Compliance achieved
5440630	November 4, 2022	Informal	State Violation/Reminder Notice
5440631	November 4, 2022	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 568264 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5440629	August 10, 2022	Resolving	State Compliance achieved
5440626	September 16, 2022	Informal	State Violation/Reminder Notice
5440627	September 16, 2022	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 568263 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance 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
5440625	January 17, 2022	Resolving	State Compliance achieved
5440622	February 3, 2022	Informal	State Violation/Reminder Notice
5440623	February 3, 2022	Informal	State Public Notification requested

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