B77/100
WEST VALLEY WATER DISTRICT — Water Quality Report 2026
Serving 104,498 people · California
Water Source
Surface Water
County
—
System ID
CA3610004
Violations
7
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2013.
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 WEST VALLEY WATER DISTRICT
Is WEST VALLEY WATER DISTRICT water safe to drink?
WEST VALLEY WATER DISTRICT water receives a grade of B (77/100), which is considered good. Out of 69 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has WEST VALLEY WATER DISTRICT detected?
69 contaminants were tested in WEST VALLEY WATER DISTRICT's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does WEST VALLEY WATER DISTRICT have any EPA violations?
Yes, WEST VALLEY WATER DISTRICT has 7 EPA violation(s) on record, with the most recent in 2013. Violation types include MR, MCL. 4 are health-based violations.
How many people does WEST VALLEY WATER DISTRICT serve?
WEST VALLEY WATER DISTRICT serves approximately 104,498 people, California.
What type of water does WEST VALLEY WATER DISTRICT provide?
WEST VALLEY WATER DISTRICT sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA3610004.
How does WEST VALLEY WATER DISTRICT compare to other utilities in California?
WEST VALLEY WATER DISTRICT 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.