MT0001646 · Montana

MILFORD COLONY INC

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

Violation records shown: 35
EPA health-based flag: 5
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 27

Counties listed by EPA · Lewis and Clark 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 30 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 · Archived

Maximum Contaminant Level Violation, AverageViolation 1171567 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported June 23, 2025 · EPA return-to-compliance field June 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696689	June 16, 2025	Informal	State Violation/Reminder Notice
4696690	June 16, 2025	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1171566 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2025 · period end March 31, 2025 · first reported May 15, 2025 · EPA return-to-compliance field March 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696685	March 20, 2025	Informal	State Violation/Reminder Notice
4696686	March 20, 2025	Informal	State Public Notification requested
4696688	April 1, 2025	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1171565 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2024 · period end December 31, 2024 · first reported December 19, 2024 · 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
4696681	December 9, 2024	Informal	State Violation/Reminder Notice
4696682	December 9, 2024	Informal	State Public Notification requested
4696684	December 18, 2024	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1171564 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2024 · period end September 30, 2024 · first reported September 19, 2024 · 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
4696677	August 14, 2024	Informal	State Violation/Reminder Notice
4696678	August 14, 2024	Informal	State Public Notification requested
4696680	September 3, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1171562 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start May 1, 2024 · period end May 31, 2024 · first reported June 27, 2024 · EPA return-to-compliance field May 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696670	June 17, 2024	Informal	State Violation/Reminder Notice
4696671	June 17, 2024	Informal	State Public Notification requested
4696673	June 19, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1171563 · Antimony, Total · Inorganic Chemicals

Noncompliance period start April 1, 2024 · period end June 30, 2024 · first reported August 15, 2024 · EPA return-to-compliance field June 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696674	July 16, 2024	Informal	State Violation/Reminder Notice
4696675	July 16, 2024	Informal	State Public Notification requested
4696676	July 30, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1171561 · Antimony, Total · Inorganic Chemicals

Noncompliance period start October 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
4696667	January 31, 2024	Informal	State Violation/Reminder Notice
4696668	January 31, 2024	Informal	State Public Notification requested
4696669	February 1, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171559 · Groundwater Rule · Ground Water 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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696663	October 16, 2023	Informal	State Other
4696659	November 1, 2023	Informal	State Violation/Reminder Notice
4696660	November 1, 2023	Informal	State Public Notification requested
4696662	November 11, 2023	Resolving	State Compliance achieved
4696661	November 13, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171556 · Groundwater Rule · Ground Water 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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696651	October 4, 2023	Informal	State Violation/Reminder Notice
4696652	October 4, 2023	Informal	State Public Notification requested
4696658	October 16, 2023	Informal	State Other
4696654	November 11, 2023	Resolving	State Compliance achieved

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 1171555 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported September 22, 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
4696648	September 19, 2023	Informal	State Violation/Reminder Notice
4696649	September 19, 2023	Informal	State Public Notification requested
4696658	October 16, 2023	Informal	State Other

Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 1171554 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2023 · period end July 27, 2023 · first reported September 22, 2023 · EPA return-to-compliance field July 27, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4696646 July 11, 2023 Informal State Violation/Reminder Notice
4696647 July 27, 2023 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696646	July 11, 2023	Informal	State Violation/Reminder Notice
4696647	July 27, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171553 · Groundwater Rule · Ground Water 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
4696642	May 1, 2023	Informal	State Violation/Reminder Notice
4696643	May 1, 2023	Informal	State Public Notification requested
4696645	May 9, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171552 · Groundwater Rule · Ground Water Rule

Noncompliance period start February 1, 2023 · period end February 28, 2023 · first reported September 22, 2023 · EPA return-to-compliance field February 28, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696638	April 6, 2023	Informal	State Violation/Reminder Notice
4696639	April 6, 2023	Informal	State Public Notification requested
4696641	May 9, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1171560 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start January 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
4696664	January 24, 2024	Informal	State Violation/Reminder Notice
4696665	January 24, 2024	Informal	State Public Notification requested
4696666	February 1, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1171558 · 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
4696655	October 18, 2023	Informal	State Violation/Reminder Notice
4696656	October 18, 2023	Informal	State Public Notification requested
4696657	October 18, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1171557 · 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
4696655	October 18, 2023	Informal	State Violation/Reminder Notice
4696656	October 18, 2023	Informal	State Public Notification requested
4696657	October 18, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171551 · Groundwater Rule · Ground Water Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696634	March 9, 2023	Informal	State Violation/Reminder Notice
4696635	March 9, 2023	Informal	State Public Notification requested
4696637	May 9, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171550 · Groundwater Rule · Ground Water Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696630	November 21, 2022	Informal	State Violation/Reminder Notice
4696631	November 21, 2022	Informal	State Public Notification requested
4696632	December 2, 2022	Informal	State Public Notification received
4696633	December 2, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171549 · Groundwater Rule · Ground Water Rule

Noncompliance period start April 1, 2022 · period end April 30, 2022 · first reported September 22, 2023 · EPA return-to-compliance field April 30, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696626	May 11, 2022	Informal	State Violation/Reminder Notice
4696627	May 11, 2022	Informal	State Public Notification requested
4696628	May 17, 2022	Informal	State Public Notification received
4696629	May 17, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1171548 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696625	April 12, 2022	Resolving	State Compliance achieved
4696622	May 2, 2022	Informal	State Violation/Reminder Notice
4696623	May 2, 2022	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171547 · Groundwater Rule · Ground Water Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696618	February 14, 2022	Informal	State Violation/Reminder Notice
4696619	February 14, 2022	Informal	State Public Notification requested
4696621	March 1, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171545 · Groundwater Rule · Ground Water 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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696611	January 13, 2022	Informal	State Violation/Reminder Notice
4696612	January 13, 2022	Informal	State Public Notification requested
4696613	February 1, 2022	Informal	State Public Notification received
4696614	February 1, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171544 · Groundwater Rule · Ground Water Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696607	November 15, 2021	Informal	State Violation/Reminder Notice
4696608	November 15, 2021	Informal	State Public Notification requested
4696610	December 7, 2021	Resolving	State Compliance achieved

Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 1171541 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 1, 2021 · period end May 27, 2022 · first reported September 22, 2023 · EPA return-to-compliance field May 27, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4696602 October 15, 2021 Informal State Violation/Reminder Notice
4696603 May 27, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696602	October 15, 2021	Informal	State Violation/Reminder Notice
4696603	May 27, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171540 · Groundwater Rule · Ground Water 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
4696598	August 13, 2021	Informal	State Violation/Reminder Notice
4696599	August 13, 2021	Informal	State Public Notification requested
4696601	February 1, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171539 · Groundwater Rule · Ground Water 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
4696594	July 15, 2021	Informal	State Violation/Reminder Notice
4696595	July 15, 2021	Informal	State Public Notification requested
4696597	February 1, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171538 · Groundwater Rule · Ground Water Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696590	June 16, 2021	Informal	State Violation/Reminder Notice
4696591	June 16, 2021	Informal	State Public Notification requested
4696592	June 28, 2021	Informal	State Public Notification received
4696593	February 1, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171537 · Groundwater Rule · Ground Water 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
4696586	May 21, 2021	Informal	State Violation/Reminder Notice
4696587	May 21, 2021	Informal	State Public Notification requested
4696589	February 1, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171536 · Groundwater Rule · Ground Water Rule

Noncompliance period start February 1, 2021 · period end February 28, 2021 · first reported September 22, 2023 · EPA return-to-compliance field February 28, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696582	March 12, 2021	Informal	State Violation/Reminder Notice
4696583	March 12, 2021	Informal	State Public Notification requested
4696585	February 1, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1171546 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start January 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
4696615	February 2, 2022	Informal	State Violation/Reminder Notice
4696616	February 2, 2022	Informal	State Public Notification requested
4696617	February 14, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171535 · Groundwater Rule · Ground Water 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
4696578	January 13, 2021	Informal	State Violation/Reminder Notice
4696579	January 13, 2021	Informal	State Public Notification requested
4696581	March 3, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 1171534 · Groundwater Rule · Ground Water Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696574	November 25, 2020	Informal	State Violation/Reminder Notice
4696575	November 25, 2020	Informal	State Public Notification requested
4696576	December 7, 2020	Informal	State Public Notification received
4696577	December 9, 2020	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Inadequate ReportingViolation 1171532 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start October 1, 2020 · period end December 8, 2020 · first reported September 22, 2023 · EPA return-to-compliance field December 8, 2020

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4696568	October 27, 2020	Informal	State Violation/Reminder Notice
4696569	December 8, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1171543 · 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
4696604	October 20, 2021	Informal	State Violation/Reminder Notice
4696605	October 20, 2021	Informal	State Public Notification requested
4696606	August 23, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1171542 · 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
4696604	October 20, 2021	Informal	State Violation/Reminder Notice
4696605	October 20, 2021	Informal	State Public Notification requested
4696606	August 23, 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