B69/100
VALLEY OF THE MOON WATER DISTRICT — Water Quality Report 2026
Serving 23,107 people · California
Water Source
Groundwater
County
—
System ID
CA4910013
Violations
4
Contaminant Test Results
4 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.80 mg/L | 1.30 mg/L | Over Limit |
PFOS | 0.005 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.005 µg/L | 0.004 µg/L | Over Limit |
vanadium | 26.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2020.
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 VALLEY OF THE MOON WATER DISTRICT
Is VALLEY OF THE MOON WATER DISTRICT water safe to drink?
VALLEY OF THE MOON WATER DISTRICT water receives a grade of B (69/100), which is considered good. Out of 67 contaminants tested, 3 exceed EPA legal limits. 4 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has VALLEY OF THE MOON WATER DISTRICT detected?
67 contaminants were tested in VALLEY OF THE MOON WATER DISTRICT's water. Notable contaminants include Copper (90th percentile), PFOS, PFOA, vanadium. 3 exceed EPA legal limits (MCLs). 4 exceed EPA health goals (MCLGs).
Does VALLEY OF THE MOON WATER DISTRICT have any EPA violations?
Yes, VALLEY OF THE MOON WATER DISTRICT has 4 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, Other.
How many people does VALLEY OF THE MOON WATER DISTRICT serve?
VALLEY OF THE MOON WATER DISTRICT serves approximately 23,107 people, California.
What type of water does VALLEY OF THE MOON WATER DISTRICT provide?
VALLEY OF THE MOON WATER DISTRICT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA4910013.
How does VALLEY OF THE MOON WATER DISTRICT compare to other utilities in California?
VALLEY OF THE MOON WATER DISTRICT scores 69/100 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.