B64/100
DOWNEY - CITY, WATER DEPT. — Water Quality Report 2026
Serving 108,816 people · California
Water Source
Groundwater
County
—
System ID
CA1910034
Violations
5
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.044 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.015 µg/L | 0.004 µg/L | Over Limit |
1,4-dioxane | 2.20 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 DOWNEY - CITY, WATER DEPT.
Is DOWNEY - CITY, WATER DEPT. water safe to drink?
DOWNEY - CITY, WATER DEPT. water receives a grade of B (64/100), which is considered good. Out of 70 contaminants tested, 2 exceed EPA legal limits. 3 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has DOWNEY - CITY, WATER DEPT. detected?
70 contaminants were tested in DOWNEY - CITY, WATER DEPT.'s water. Notable contaminants include PFOS, PFOA, 1,4-dioxane. 2 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does DOWNEY - CITY, WATER DEPT. have any EPA violations?
Yes, DOWNEY - CITY, WATER DEPT. has 5 EPA violation(s) on record, with the most recent in 2018. Violation types include TT, MR, MCL. 3 are health-based violations.
How many people does DOWNEY - CITY, WATER DEPT. serve?
DOWNEY - CITY, WATER DEPT. serves approximately 108,816 people, California. The system provides water to 1 community: Downey.
What type of water does DOWNEY - CITY, WATER DEPT. provide?
DOWNEY - CITY, WATER DEPT. sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1910034.
How does DOWNEY - CITY, WATER DEPT. compare to other utilities in California?
DOWNEY - CITY, WATER DEPT. scores 64/100 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.