CA0409183 · California

SIERRA MOON MUTUAL WATER COMPANY

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

Violation records shown: 26
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 1
Monitoring and reporting records: 25

Counties listed by EPA · Butte County, California

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 3 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 364 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Unaddressed by formal action
LSL InventoryViolation 1400067 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · first reported April 1, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Unaddressed by formal action
LSL ReportingViolation 1400068 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · first reported April 1, 2025
No linked action row appears in the records shown.

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1400066 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2023 · period end September 30, 2023 · first reported May 15, 2024 · 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
1400535	October 25, 2023	Resolving	State Compliance achieved
1400534	November 21, 2023	Informal	State Formal Notice of Violation issued

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1400065 · Nitrate · Nitrate Rule

Noncompliance period start January 1, 2022 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1400533	February 9, 2023	Resolving	State Compliance achieved
1400532	February 17, 2023	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1400064 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1400533	February 9, 2023	Resolving	State Compliance achieved
1400532	February 17, 2023	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Archived
Monitoring, RegularViolation 1400063 · Styrene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400062 · Ethylbenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400061 · Toluene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400060 · Benzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400059 · CHLOROBENZENE · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400057 · Tetrachloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400056 · 1,1,2-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400055 · Trichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400054 · 1,2-Dichloropropane · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400053 · Carbon tetrachloride · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400052 · 1,1,1-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400051 · 1,2-Dichloroethane · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400050 · trans-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400048 · 1,1-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400047 · Vinyl chloride · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400046 · p-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400045 · o-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400044 · DICHLOROMETHANE · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400043 · Xylenes, Total · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400040 · cis-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 1400039 · 1,2,4-Trichlorobenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2017 · period end December 31, 2022 · first reported October 2, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.

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