Public water system record

Sierra Moon Mutual Water Company

Serves an area of Butte County, CA · 120 people served

Federal records show 1 health-based violation and 27 monitoring/reporting issues for Sierra Moon Mutual Water Company in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

CA0409183
CHICO
CA
120 served

System profile

Source water Groundwater

ZIP 95928

EPA system ID CA0409183

Verify this system on EPA ECHO →

Health-based violations, last 10 years: 1
Resolved: 0
Unresolved: 1
Any acute record: No
Monitoring issues, last 10 years: 27

Key facts

Sierra Moon Mutual Water Company draws water from 2 wells.
Most recent formal enforcement: compliance order (no penalty) by California, February 2023.
Record on file since 2009, with 0 health-based violations before October 19, 2016.

Check whether Sierra Moon Mutual Water Company serves your address

Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant	Rule family	Start date	Status	Acute
LEAD AND COPPER RULE REVISIONS Treatment technique failure	350	Oct 17, 2024	Active	No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue	Start date	Status
LEAD AND COPPER RULE REVISIONS RPT	Oct 17, 2024	Active
Revised Total Coliform Rule Monitoring violation	Sep 1, 2023	Resolved
Nitrate Monitoring and reporting	Jan 1, 2022	Resolved
Arsenic Monitoring and reporting	Jan 1, 2020	Resolved
Revised Total Coliform Rule Monitoring violation	Apr 1, 2018	Resolved
Revised Total Coliform Rule Monitoring violation	May 1, 2017	Resolved
Styrene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Ethylbenzene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Toluene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Benzene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
CHLOROBENZENE Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Tetrachloroethylene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1,2-Trichloroethane Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Trichloroethylene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2-Dichloropropane Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Carbon tetrachloride Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1,1-Trichloroethane Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2-Dichloroethane Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
trans-1,2-Dichloroethylene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1-Dichloroethylene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Vinyl chloride Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
p-Dichlorobenzene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
o-Dichlorobenzene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
DICHLOROMETHANE Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Xylenes, Total Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
cis-1,2-Dichloroethylene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2,4-Trichlorobenzene Monitoring and reporting	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.

Full record since 2009

EPA's records for Sierra Moon Mutual Water Company go back to 2009. Before October 19, 2016 they list no health-based violations and 4 monitoring or reporting violations.

Violations that began in	Health-based	Monitoring and reporting
2000s	0	1
2010 to October 18, 2016	0	3
October 19, 2016 to 2019	0	23
2020s	1	4

Enforcement actions

California regulators took 1 formal enforcement action against Sierra Moon Mutual Water Company in 2023. The most recent was a compliance order (no penalty) in February 2023.

Date	By	Action	Violations covered
Feb 17, 2023	California	Compliance order (no penalty)	2 violations: Arsenic, Nitrate

What the violations mean

LEAD AND COPPER RULE REVISIONS

1 incident

The system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

Sierra Moon Mutual Water Company draws water from 2 wells.

Annual water quality report

Sierra Moon Mutual Water Company must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Sierra Moon Mutual Water Company for a copy.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.

Certified drinking water labs by state EPA guidance for private wells