Public water system record
Willowside Mutual Water Company
Serves an area of Sonoma County, CA · 448 people served
Federal records show no health-based violations and no monitoring or reporting issues for Willowside 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
- 0
Key facts
- Willowside Mutual Water Company draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by California, July 2008.
- Record on file since 1980, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 158 unknown out of 160 service lines.
Check whether Willowside 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, and no monitoring or reporting violations either.
Full record since 1980
EPA's records for Willowside Mutual Water Company go back to 1980. Before October 19, 2016 they list no health-based violations and 11 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 5 |
| 1990s | 0 | 3 |
| 2000s | 0 | 3 |
Enforcement actions
California regulators took 2 formal enforcement actions against Willowside Mutual Water Company between 2007 and 2008. The most recent was a compliance order (no penalty) in July 2008.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 11, 2008 | California | Compliance order (no penalty) | 2 violations: Nitrate, ETHYLENE DIBROMIDE |
| Oct 18, 2007 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
Where the water comes from
Willowside Mutual Water Company draws water from 2 wells.
Annual water quality report
Willowside 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 Willowside 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