B63/100
SONOMA STATE UNIVERSITY — Water Quality Report 2026
Serving 10,986 people · California
Water Source
Groundwater
County
—
System ID
CA4910027
Violations
13
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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 SONOMA STATE UNIVERSITY
Is SONOMA STATE UNIVERSITY water safe to drink?
SONOMA STATE UNIVERSITY water receives a grade of B (63/100), which is considered good. Out of 51 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has SONOMA STATE UNIVERSITY detected?
51 contaminants were tested in SONOMA STATE UNIVERSITY's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does SONOMA STATE UNIVERSITY have any EPA violations?
Yes, SONOMA STATE UNIVERSITY has 13 EPA violation(s) on record, with the most recent in 2017. Violation types include MR, TT, MCL. 6 are health-based violations.
How many people does SONOMA STATE UNIVERSITY serve?
SONOMA STATE UNIVERSITY serves approximately 10,986 people, California.
What type of water does SONOMA STATE UNIVERSITY provide?
SONOMA STATE UNIVERSITY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA4910027.
How does SONOMA STATE UNIVERSITY compare to other utilities in California?
SONOMA STATE UNIVERSITY scores 63/100 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.