A84/100
GOLDEN STATE WATER CO - BARSTOW — Water Quality Report 2026
Serving 32,547 people · California
Water Source
Groundwater
County
—
System ID
CA3610043
Violations
1
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.006 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2009.
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 CO - BARSTOW
Is GOLDEN STATE WATER CO - BARSTOW water safe to drink?
GOLDEN STATE WATER CO - BARSTOW water receives a grade of A (84/100), which is considered excellent. Out of 66 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GOLDEN STATE WATER CO - BARSTOW detected?
66 contaminants were tested in GOLDEN STATE WATER CO - BARSTOW's water. Notable contaminants include PFOA, Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does GOLDEN STATE WATER CO - BARSTOW have any EPA violations?
Yes, GOLDEN STATE WATER CO - BARSTOW has 1 EPA violation(s) on record, with the most recent in 2009. Violation types include MCL. 1 are health-based violations.
How many people does GOLDEN STATE WATER CO - BARSTOW serve?
GOLDEN STATE WATER CO - BARSTOW serves approximately 32,547 people, California.
What type of water does GOLDEN STATE WATER CO - BARSTOW provide?
GOLDEN STATE WATER CO - BARSTOW sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA3610043.
How does GOLDEN STATE WATER CO - BARSTOW compare to other utilities in California?
GOLDEN STATE WATER CO - BARSTOW scores 84/100 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.