CALIFORNIA WATER SERVICE CO. - DOMINGUEZ Water Quality Report
Population
143,996
people served
Water Source
🌊 Surface
rivers, lakes, reservoirs
National Rank
Top 43%
of 49,184 US systems
5-Year Record
✅ Clean
no violations
A
Safe
Safety Grade
0 violations in the past 5 years
System Details
- PWSID
- CA1910033
- Population Served
- 143,996
- Water Source
- Surface Water
- Owner
- Private
- State
- California
- EPA Region
- 9
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Total Trihalomethanes (TTHMs) | ⚠ Monitoring/Reporting | 6 |
| Haloacetic Acids (HAA5) | ⚠ Monitoring/Reporting | 6 |
Violation History
2018
12
Total violations on record: 12
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
How does this compare?
This systemNational average
Grade A
Avg: B-C
12violations total
43% of national average
National avg: ~28 per system
🏙️ This is a large system — serving 22× more people than the national average.