Public water system record
Willow County Water District
Serves an area of Mendocino County, CA · 3,797 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Willow County Water District 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
- 2
Key facts
- Willow County Water District draws water from 5 wells.
- Most recent formal enforcement: compliance order (no penalty) by California, October 2024.
- Record on file since 1988, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,087 service lines.
Check whether Willow County Water District 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 |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
E. coli
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
Full record since 1988
EPA's records for Willow County Water District go back to 1988. Before October 19, 2016 they list no health-based violations and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 1 |
| 2020s | 0 | 2 |
Enforcement actions
California regulators took 2 formal enforcement actions against Willow County Water District between 2021 and 2024. The most recent was a compliance order (no penalty) in October 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 1, 2024 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Mar 8, 2021 | California | Compliance order (no penalty) | 1 violation: E. coli |
Where the water comes from
Willow County Water District draws water from 5 wells. It also buys water from City of Ukiah. 1 other community water system buys water from Willow County Water District.
Buys water from
- City of Ukiah Ukiah, CA
Community systems that buy water from it
- City of Ukiah Ukiah, CA
Annual water quality report
Willow County Water District 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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