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CA3610031 · California

MUSCOY MWC NO. 1

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

Violation records shown: 17
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 17

Counties listed by EPA · San Bernardino County, California

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 17 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 9313020 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2024 · period end April 30, 2024 · first reported April 1, 2025 · EPA return-to-compliance field April 30, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313019 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 1, 2024 · period end March 31, 2024 · first reported April 1, 2025 · EPA return-to-compliance field March 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313018 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2024 · period end February 29, 2024 · first reported April 1, 2025 · EPA return-to-compliance field February 29, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313017 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2024 · period end January 31, 2024 · first reported April 1, 2025 · EPA return-to-compliance field January 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313016 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2023 · period end December 31, 2023 · first reported April 1, 2025 · EPA return-to-compliance field December 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313015 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2023 · period end November 30, 2023 · first reported April 1, 2025 · EPA return-to-compliance field November 30, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313014 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2023 · period end October 31, 2023 · first reported April 1, 2025 · EPA return-to-compliance field October 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313013 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2023 · period end September 30, 2023 · first reported April 1, 2025 · EPA return-to-compliance field September 30, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313012 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2023 · period end August 31, 2023 · first reported April 1, 2025 · EPA return-to-compliance field August 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313011 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start July 1, 2023 · period end July 31, 2023 · first reported April 1, 2025 · EPA return-to-compliance field July 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313010 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start June 1, 2023 · period end June 30, 2023 · first reported April 1, 2025 · EPA return-to-compliance field June 30, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313009 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start May 1, 2023 · period end May 31, 2023 · first reported April 1, 2025 · EPA return-to-compliance field May 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313008 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2023 · period end April 30, 2023 · first reported April 1, 2025 · EPA return-to-compliance field April 30, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313007 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 1, 2023 · period end March 31, 2023 · first reported April 1, 2025 · EPA return-to-compliance field March 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913030	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313006 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2023 · period end February 28, 2023 · first reported April 1, 2025 · EPA return-to-compliance field February 28, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913030	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9313005 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2023 · period end January 31, 2023 · first reported April 1, 2025 · EPA return-to-compliance field January 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913030	May 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine Minor (TCR)Violation 9313004 · Coliform (TCR) · Total Coliform Rule

Noncompliance period start January 1, 2012 · period end January 31, 2012 · first reported April 1, 2025 · EPA return-to-compliance field January 31, 2012

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9913028	May 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
9913029	May 31, 2024	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