Public water system record
End-O-Valley Mutual Water Company
Serves an area of Sonoma County, CA · 129 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for End-O-Valley Mutual Water Company in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- End-O-Valley Mutual Water Company draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by California, December 2022.
- Record on file since 1980, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 12 unknown out of 39 service lines.
Check whether End-O-Valley Mutual Water Company serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Jun 1, 2022 | Resolved |
Full record since 1980
EPA's records for End-O-Valley Mutual Water Company go back to 1980. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 8 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 4 |
| 1990s | 2 | 2 |
| 2000s | 0 | 1 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform (acute), began October 1998, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform (acute)
Contaminant limit exceeded
|
Oct 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1997 | Resolved |
Enforcement actions
California regulators took 4 formal enforcement actions against End-O-Valley Mutual Water Company between 1998 and 2022. The most recent was a compliance order (no penalty) in December 2022.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 22, 2022 | California | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Nov 17, 2014 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
| Jun 13, 2007 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Dec 28, 1998 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
Where the water comes from
End-O-Valley Mutual Water Company draws water from 2 wells.
Annual water quality report
End-O-Valley 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 End-O-Valley 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