A95/100
CWS - SELMA — Water Quality Report 2026
Serving 26,517 people · California
Water Source
Groundwater
County
—
System ID
CA1010024
Violations
1
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1992.
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 CWS - SELMA
Is CWS - SELMA water safe to drink?
CWS - SELMA water receives a grade of A (95/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CWS - SELMA detected?
66 contaminants were tested in CWS - SELMA's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CWS - SELMA have any EPA violations?
Yes, CWS - SELMA has 1 EPA violation(s) on record, with the most recent in 1992. Violation types include MCL. 1 are health-based violations.
How many people does CWS - SELMA serve?
CWS - SELMA serves approximately 26,517 people, California.
What type of water does CWS - SELMA provide?
CWS - SELMA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1010024.
How does CWS - SELMA compare to other utilities in California?
CWS - SELMA scores 95/100 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.