MT0000297 · Montana

NASHUA TOWN OF

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

Violation records shown: 24
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 21

Counties listed by EPA · Valley 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 23 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.

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383165 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2025 · period end September 30, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262657	October 29, 2025	Informal	State Violation/Reminder Notice
262658	October 29, 2025	Informal	State Public Notification requested
262660	October 29, 2025	Resolving	State Compliance achieved

Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Complete Failure to ReportViolation 1383163 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2025 · first reported September 23, 2025
No linked action row appears in the records shown.
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 1383159 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2024 · period end September 13, 2024 · first reported September 19, 2024 · EPA return-to-compliance field September 13, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
262644 July 23, 2024 Informal State Violation/Reminder Notice
262645 September 13, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262644	July 23, 2024	Informal	State Violation/Reminder Notice
262645	September 13, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1383162 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 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
262649	January 23, 2025	Informal	State Violation/Reminder Notice
262650	January 23, 2025	Informal	State Public Notification requested
262651	January 23, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1383161 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 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
262649	January 23, 2025	Informal	State Violation/Reminder Notice
262650	January 23, 2025	Informal	State Public Notification requested
262651	January 23, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383158 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262643	October 10, 2023	Resolving	State Compliance achieved
262640	October 24, 2023	Informal	State Violation/Reminder Notice
262641	October 24, 2023	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383155 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2023 · period end August 31, 2023 · first reported November 15, 2023 · EPA return-to-compliance field August 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262633	September 26, 2023	Informal	State Violation/Reminder Notice
262634	September 26, 2023	Informal	State Public Notification requested
262636	October 10, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383154 · 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
262629	July 13, 2023	Informal	State Violation/Reminder Notice
262630	July 13, 2023	Informal	State Public Notification requested
262632	July 31, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1383157 · 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
262637	October 18, 2023	Informal	State Violation/Reminder Notice
262638	October 18, 2023	Informal	State Public Notification requested
262639	October 18, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1383156 · 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
262637	October 18, 2023	Informal	State Violation/Reminder Notice
262638	October 18, 2023	Informal	State Public Notification requested
262639	October 18, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 1383153 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start September 29, 2022 · period end October 17, 2022 · first reported September 22, 2023 · EPA return-to-compliance field October 17, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262627	October 17, 2022	Informal	State Violation/Reminder Notice
262628	October 17, 2022	Resolving	State Compliance achieved

Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 1383151 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2022 · period end September 16, 2022 · first reported September 22, 2023 · EPA return-to-compliance field September 16, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
262622 July 11, 2022 Informal State Violation/Reminder Notice
262623 September 16, 2022 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 1383150 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start April 1, 2022 · period end April 4, 2022 · first reported September 22, 2023 · EPA return-to-compliance field April 4, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
262619 April 4, 2022 Informal State Violation/Reminder Notice
262621 April 4, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262622	July 11, 2022	Informal	State Violation/Reminder Notice
262623	September 16, 2022	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262619	April 4, 2022	Informal	State Violation/Reminder Notice
262621	April 4, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383149 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262615	October 22, 2021	Informal	State Violation/Reminder Notice
262616	October 22, 2021	Informal	State Public Notification requested
262618	October 28, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383146 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance 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
262608	August 23, 2021	Informal	State Violation/Reminder Notice
262609	August 23, 2021	Informal	State Public Notification requested
262611	October 28, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 1383144 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2021 · period end September 13, 2021 · first reported September 22, 2023 · EPA return-to-compliance field September 13, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262601	July 16, 2021	Informal	State Violation/Reminder Notice
262602	July 16, 2021	Informal	State Public Notification requested
262603	September 13, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383145 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262604	July 16, 2021	Informal	State Violation/Reminder Notice
262605	July 16, 2021	Informal	State Public Notification requested
262607	October 28, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383142 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262594	May 18, 2021	Informal	State Violation/Reminder Notice
262595	May 18, 2021	Informal	State Public Notification requested
262597	October 28, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 1383141 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start April 1, 2021 · period end October 21, 2022 · first reported September 22, 2023 · EPA return-to-compliance field October 21, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
262592 April 2, 2021 Informal State Violation/Reminder Notice
262593 October 21, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262592	April 2, 2021	Informal	State Violation/Reminder Notice
262593	October 21, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383140 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262584	February 17, 2021	Informal	State Violation/Reminder Notice
262585	February 17, 2021	Informal	State Public Notification requested
262588	February 17, 2021	Informal	State Violation/Reminder Notice
262589	February 17, 2021	Informal	State Public Notification requested
262587	February 24, 2021	Resolving	State Compliance achieved
262591	February 24, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383139 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2020 · period end December 31, 2020 · first reported September 22, 2023 · 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
262580	January 19, 2021	Informal	State Violation/Reminder Notice
262581	January 19, 2021	Informal	State Public Notification requested
262583	February 24, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1383138 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2020 · period end November 30, 2020 · first reported September 22, 2023 · EPA return-to-compliance field November 30, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262576	December 18, 2020	Informal	State Violation/Reminder Notice
262577	December 18, 2020	Informal	State Public Notification requested
262579	February 24, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1383148 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start September 1, 2020 · period end August 31, 2021 · first reported November 10, 2021 · EPA return-to-compliance field August 31, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262612	October 20, 2021	Informal	State Violation/Reminder Notice
262613	October 20, 2021	Informal	State Public Notification requested
262614	August 8, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1383147 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start September 1, 2020 · period end August 31, 2021 · first reported November 10, 2021 · EPA return-to-compliance field August 31, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262612	October 20, 2021	Informal	State Violation/Reminder Notice
262613	October 20, 2021	Informal	State Public Notification requested
262614	August 8, 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