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MT0003203 · Montana

ANTELOPE COUNTY WATER AND SEWER

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

Violation records shown: 8
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 6

Counties listed by EPA · Sheridan 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 8 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 5350681 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2026 · period end July 13, 2026 · first reported September 24, 2026 · EPA return-to-compliance field July 13, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
5150005 July 2, 2026 Informal State Violation/Reminder Notice
5150006 July 13, 2026 Resolving State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 5350680 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5150001	January 22, 2026	Informal	State Violation/Reminder Notice
5150002	January 22, 2026	Informal	State Public Notification requested
5150004	January 22, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 5350679 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5149997	January 15, 2025	Informal	State Violation/Reminder Notice
5149998	January 15, 2025	Informal	State Public Notification requested
5150000	January 15, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 5350676 · 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
5149993	July 10, 2023	Resolving	State Compliance achieved
5149990	July 13, 2023	Informal	State Violation/Reminder Notice
5149991	July 13, 2023	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 5350678 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end October 18, 2023 · first reported November 15, 2023 · EPA return-to-compliance field October 18, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5149994	October 18, 2023	Informal	State Violation/Reminder Notice
5149995	October 18, 2023	Informal	State Public Notification requested
5149996	October 18, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 5350677 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end October 18, 2023 · first reported November 15, 2023 · EPA return-to-compliance field October 18, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5149994	October 18, 2023	Informal	State Violation/Reminder Notice
5149995	October 18, 2023	Informal	State Public Notification requested
5149996	October 18, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 5350675 · 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
5149989	January 11, 2022	Resolving	State Compliance achieved
5149986	February 3, 2022	Informal	State Violation/Reminder Notice
5149987	February 3, 2022	Informal	State Public Notification requested

Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 5350673 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2021 · period end August 23, 2021 · first reported September 22, 2023 · EPA return-to-compliance field August 23, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
5149981 July 19, 2021 Informal State Violation/Reminder Notice
5149982 August 23, 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