A82/100
HAWTHORNE-CITY WATER DEPT. — Water Quality Report 2026
Serving 44,718 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA1910047
Violations
3
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.50 mg/L | 1.30 mg/L | Over Limit |
chlorate | 220.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2019.
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 HAWTHORNE-CITY WATER DEPT.
Is HAWTHORNE-CITY WATER DEPT. water safe to drink?
HAWTHORNE-CITY WATER DEPT. water receives a grade of A (82/100), which is considered excellent. Out of 70 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has HAWTHORNE-CITY WATER DEPT. detected?
70 contaminants were tested in HAWTHORNE-CITY WATER DEPT.'s water. Notable contaminants include Copper (90th percentile), chlorate. 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does HAWTHORNE-CITY WATER DEPT. have any EPA violations?
Yes, HAWTHORNE-CITY WATER DEPT. has 3 EPA violation(s) on record, with the most recent in 2019. Violation types include MR, MCL. 1 are health-based violations.
How many people does HAWTHORNE-CITY WATER DEPT. serve?
HAWTHORNE-CITY WATER DEPT. serves approximately 44,718 people, California. The system provides water to 1 community: Hawthorne.
What type of water does HAWTHORNE-CITY WATER DEPT. provide?
HAWTHORNE-CITY WATER DEPT. 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 CA1910047.
How does HAWTHORNE-CITY WATER DEPT. compare to other utilities in California?
HAWTHORNE-CITY WATER DEPT. scores 82/100 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.