Public water system record
California Water Service Co. - Dominguez
Serves Carson, Torrance, West Carson and 1 more place, Los Angeles County, CA · 143,996 people served
Federal records show no health-based violations and 4 monitoring/reporting issues for California Water Service Co. - Dominguez 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
- 4
Key facts
- California Water Service Co. - Dominguez draws water from 11 wells.
- Record on file since 1993, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 31,869 unknown out of 34,492 service lines.
Check whether California Water Service Co. - Dominguez 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 |
|---|---|---|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
Full record since 1993
EPA's records for California Water Service Co. - Dominguez go back to 1993. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 1 |
| 2000s | 0 | 1 |
| October 19, 2016 to 2019 | 0 | 4 |
Most recent health-based violation before October 19, 2016: Total Coliform, began October 1995, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1995 | Resolved |
Where the water comes from
California Water Service Co. - Dominguez draws water from 11 wells. It also buys water from Metropolitan Water Dist. of So. Cal. 2 other public water systems have emergency connections to California Water Service Co. - Dominguez.
Buys water from
- Metropolitan Water Dist. of So. Cal. La Verne, CA
Annual water quality report
California Water Service Co. - Dominguez 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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