A100/100
GOLDEN STATE WATER COMPANY - SIMI VALLEY — Water Quality Report 2026
Serving 45,128 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA5610059
Violations
0
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 GOLDEN STATE WATER COMPANY - SIMI VALLEY
Is GOLDEN STATE WATER COMPANY - SIMI VALLEY water safe to drink?
GOLDEN STATE WATER COMPANY - SIMI VALLEY water receives a grade of A (100/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has GOLDEN STATE WATER COMPANY - SIMI VALLEY detected?
69 contaminants were tested in GOLDEN STATE WATER COMPANY - SIMI VALLEY's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does GOLDEN STATE WATER COMPANY - SIMI VALLEY have any EPA violations?
No, GOLDEN STATE WATER COMPANY - SIMI VALLEY has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does GOLDEN STATE WATER COMPANY - SIMI VALLEY serve?
GOLDEN STATE WATER COMPANY - SIMI VALLEY serves approximately 45,128 people, California.
What type of water does GOLDEN STATE WATER COMPANY - SIMI VALLEY provide?
GOLDEN STATE WATER COMPANY - SIMI VALLEY 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 CA5610059.
How does GOLDEN STATE WATER COMPANY - SIMI VALLEY compare to other utilities in California?
GOLDEN STATE WATER COMPANY - SIMI VALLEY scores 100/100 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.