A84/100
DEL MAR, CITY OF — Water Quality Report 2026
Serving 3,919 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA3710004
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: May 1, 2022 – May 31, 2022Rule: Total Coliform RuleEnforcement: Formal — state order issued
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About DEL MAR, CITY OF
Is DEL MAR, CITY OF water safe to drink?
DEL MAR, CITY OF water receives a grade of A (84/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has DEL MAR, CITY OF detected?
31 contaminants were tested in DEL MAR, CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does DEL MAR, CITY OF have any EPA violations?
Yes, DEL MAR, CITY OF has 5 EPA violation(s) on record, with the most recent in 2022. Violation types include MON, MR, MCL. 2 are health-based violations.
How many people does DEL MAR, CITY OF serve?
DEL MAR, CITY OF serves approximately 3,919 people, California. The system provides water to 1 community: Del Mar.
What type of water does DEL MAR, CITY OF provide?
DEL MAR, CITY OF sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA3710004.
How does DEL MAR, CITY OF compare to other utilities in California?
DEL MAR, CITY OF scores 84/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.