Public water system record
County Service Area 11
Serves Pescadero, San Mateo County, CA · 642 people served
Federal records show 1 health-based violation and no monitoring/reporting issues for County Service Area 11 in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- County Service Area 11 draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by California, July 2019.
- Record on file since 1996, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 102 service lines.
Check whether County Service Area 11 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Jun 1, 2019 | Resolved | No |
Full record since 1996
EPA's records for County Service Area 11 go back to 1996. Before October 19, 2016 they list no health-based violations and 24 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 3 |
| 2000s | 0 | 21 |
| October 19, 2016 to 2019 | 1 | 0 |
Enforcement actions
California regulators took 1 formal enforcement action against County Service Area 11 in 2019. The most recent was a compliance order (no penalty) in July 2019.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 15, 2019 | California | Compliance order (no penalty) | 1 violation (1 health-based): Revised Total Coliform Rule |
What the violations mean
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
County Service Area 11 draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
County Service Area 11 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