San Diego, California Water Quality Report
Comprehensive analysis of tap water safety based on EPA data
Last updated: January 2026
Is San Diego's Water Safe to Drink?
Some Concerns. San Diego's tap water has some contaminants worth monitoring. Consider a water filter for extra protection. Score: 75/100.
Contaminants Found in San Diego's Water
1 contaminants tested • Data from EPA SDWIS database
| Contaminant | Level Detected | EPA Limit | % of Limit | Status |
|---|---|---|---|---|
Lead | 0 mg/L | 0.015 mg/L | 0.0% | Safe |
Compliance Violations
Past EPA violations recorded for San Diego's water system
other
Contaminant 8000 - 4/1/2020
Resolvedother
Contaminant 8000 - 3/1/2020
Resolvedother
Contaminant 8000 - 2/1/2020
Resolvedother
Contaminant 8000 - 1/1/2020
Resolvedother
Contaminant 8000 - 12/1/2019
ResolvedShowing 5 of 12 violations
About San Diego's Water System
SAN DIEGO, CITY OF
- PWS ID:
- CA3710020
- Population Served:
- 1,385,379
- Water Source:
- surface
San Diego Water Quality Score
Based on EPA contaminant data and compliance records
Positive Findings
- Above average water quality
- No violations in the past 3 years
- No health-based (MCL) violations
- All tested contaminants well below EPA limits
Protect Your Family's Water
Even with good water quality, many families choose to filter their water for extra peace of mind.
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Other Cities in California
Compare water quality with nearby cities.
View all California cities →Frequently Asked Questions
- Where does San Diego's water come from?
- San Diego primarily uses surface water sources.
- How often is San Diego's water tested?
- Water utilities are required to test for contaminants regularly and report results to the EPA.
- Should I use a water filter in San Diego?
- While the water meets EPA standards, many families choose filters for extra peace of mind.