A89/100
CITY OF WINTERS — Water Quality Report 2026
Serving 7,115 people · California
Water Source
Groundwater
County
—
System ID
CA5710005
Violations
7
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 CITY OF WINTERS
Is CITY OF WINTERS water safe to drink?
CITY OF WINTERS water receives a grade of A (89/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CITY OF WINTERS detected?
31 contaminants were tested in CITY OF WINTERS's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CITY OF WINTERS have any EPA violations?
Yes, CITY OF WINTERS has 7 EPA violation(s) on record, with the most recent in 2017. Violation types include MR, MCL, Other. 1 are health-based violations.
How many people does CITY OF WINTERS serve?
CITY OF WINTERS serves approximately 7,115 people, California. The system provides water to 1 community: Winters.
What type of water does CITY OF WINTERS provide?
CITY OF WINTERS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA5710005.
How does CITY OF WINTERS compare to other utilities in California?
CITY OF WINTERS scores 89/100 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.