SAN DIEGO, CITY OF Water Quality Report
Population
1,385,379
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
- CA3710020
- Population Served
- 1,385,379
- Water Source
- Surface Water
- Owner
- Local Government
- State
- California
- EPA Region
- 9
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Nitrate | ⚠ Monitoring/Reporting | 12 |
| Nitrite | ⚠ Monitoring/Reporting | 6 |
| Contaminant 4109 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 8000 | ⚠ Monitoring/Reporting | 15 |
Violation History
2020
12
2019
6
2017
6
2014
6
2013
3
2011
3
Total violations on record: 36
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
Reverse Osmosis System
Removes up to 99% of contaminants including PFAS, lead, arsenic, and nitrates
Removes: Nitrate, Nitrite
How does this compare?
This systemNational average
Grade A
Avg: B-C
36violations total
129% of national average
National avg: ~28 per system
🏙️ This is a large system — serving 208× more people than the national average.