Public water system record
CWSC Oak Hills
Serves Prunedale, Monterey County, CA · 3,161 people served
Federal records show no health-based violations and no monitoring or reporting issues for CWSC Oak Hills 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
- CWSC Oak Hills draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
- Record on file since 1993, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 676 unknown out of 906 service lines.
Check whether CWSC Oak Hills 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 1993
EPA's records for CWSC Oak Hills go back to 1993. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 3 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 1 |
| 2000s | 0 | 2 |
Most recent health-based violation before October 19, 2016: 1,1-Dichloroethylene, began April 1996, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
1,1-Dichloroethylene
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.007 mg/L (9 times the limit)
|
Apr 10, 1996 | Resolved |
|
1,1-Dichloroethylene
Contaminant limit exceeded
Measured 0.0086 mg/L, federal limit 0.007 mg/L (1.2 times the limit)
|
Apr 1, 1996 | Resolved |
Where the water comes from
CWSC Oak Hills draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
CWSC Oak Hills 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