Skip to content

MT0004719 · Montana

NCMRWA TIBER SERVICE AREA

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

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

Counties listed by EPA · Liberty 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 90 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 21 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2024 · period end September 30, 2024 · first reported February 18, 2025 · EPA return-to-compliance field September 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
74	December 20, 2024	Informal	State Violation/Reminder Notice
75	December 20, 2024	Informal	State Public Notification requested
76	December 20, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 20 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	December 16, 2019	Informal	State Other
71	May 1, 2020	Formal	State Administrative/Compliance Order without penalty issued
68	April 4, 2024	Informal	State Violation/Reminder Notice
69	April 4, 2024	Informal	State Public Notification requested
70	April 4, 2024	Resolving	State Compliance achieved
73	April 10, 2024	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 19 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 15, 2024 · EPA return-to-compliance field December 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
67	December 16, 2019	Informal	State Other
66	May 1, 2020	Formal	State Administrative/Compliance Order without penalty issued
62	February 12, 2024	Informal	State Violation/Reminder Notice
63	February 12, 2024	Informal	State Public Notification requested
65	February 12, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 18 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 13, 2023 · first reported September 22, 2023 · EPA return-to-compliance field September 13, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
61	December 16, 2019	Informal	State Other
60	May 1, 2020	Formal	State Administrative/Compliance Order without penalty issued
57	September 13, 2023	Informal	State Violation/Reminder Notice
58	September 13, 2023	Informal	State Public Notification requested
59	September 13, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 17 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2023 · period end June 26, 2023 · first reported September 22, 2023 · EPA return-to-compliance field June 26, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
56	December 16, 2019	Informal	State Other
55	May 1, 2020	Formal	State Administrative/Compliance Order without penalty issued
52	June 26, 2023	Informal	State Violation/Reminder Notice
53	June 26, 2023	Informal	State Public Notification requested
54	June 26, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported September 22, 2023 · EPA return-to-compliance field June 30, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
51	December 16, 2019	Informal	State Other
50	May 1, 2020	Formal	State Administrative/Compliance Order without penalty issued
47	May 27, 2021	Informal	State Violation/Reminder Notice
48	May 27, 2021	Informal	State Public Notification requested
49	August 20, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 15 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field March 31, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
46	December 16, 2019	Informal	State Other
45	May 1, 2020	Formal	State Administrative/Compliance Order without penalty issued
42	March 12, 2021	Informal	State Violation/Reminder Notice
43	March 12, 2021	Informal	State Public Notification requested
44	August 20, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 14 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2020

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
41	December 16, 2019	Informal	State Other
40	May 1, 2020	Formal	State Administrative/Compliance Order without penalty issued
37	December 8, 2020	Informal	State Violation/Reminder Notice
38	December 8, 2020	Informal	State Public Notification requested
39	August 20, 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