Public water system record
Mountain Mesa WC
Serves Mountain Mesa, Kern County, CA · 777 people served
Federal records show no health-based violations and 3 monitoring/reporting issues for Mountain Mesa WC 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
- 3
Key facts
- Mountain Mesa WC draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by California, February 2020.
- Record on file since 1992, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 394 service lines.
Check whether Mountain Mesa WC 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 |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
Full record since 1992
EPA's records for Mountain Mesa WC go back to 1992. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 1 |
| October 19, 2016 to 2019 | 0 | 3 |
Most recent health-based violation before October 19, 2016: Total Coliform, began June 1997, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1992 | Resolved |
Enforcement actions
California regulators took 2 formal enforcement actions against Mountain Mesa WC in 2020. The most recent was a compliance order (no penalty) in February 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 27, 2020 | California | Compliance order (no penalty) | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Jan 2, 2020 | California | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
Where the water comes from
Mountain Mesa WC draws water from 2 wells. It also buys water from CWS Southlake System. 1 other public water system has a part-time connection to Mountain Mesa WC.
Buys water from
- CWS Southlake System San Jose, CA
Annual water quality report
Mountain Mesa WC 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