B77/100
CITY OF DALY CITY — Water Quality Report 2026
Serving 104,901 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA4110013
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 230.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2003.
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 CITY OF DALY CITY
Is CITY OF DALY CITY water safe to drink?
CITY OF DALY CITY water receives a grade of B (77/100), which is considered good. Out of 76 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CITY OF DALY CITY detected?
76 contaminants were tested in CITY OF DALY CITY's water. Notable contaminants include chlorate. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CITY OF DALY CITY have any EPA violations?
Yes, CITY OF DALY CITY has 4 EPA violation(s) on record, with the most recent in 2003. Violation types include MCL, TT. 4 are health-based violations.
How many people does CITY OF DALY CITY serve?
CITY OF DALY CITY serves approximately 104,901 people, California. The system provides water to 1 community: Daly City.
What type of water does CITY OF DALY CITY provide?
CITY OF DALY CITY 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 CA4110013.
How does CITY OF DALY CITY compare to other utilities in California?
CITY OF DALY CITY scores 77/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our California state page for a full comparison of water systems.