A93/100
SCWA MATHER-SUNRISE — Water Quality Report 2026
Serving 30,825 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA3410704
Violations
3
Contaminant Test Results
EPA Violation History
2
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 2Unresolved
Treatment technique violation
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 SCWA MATHER-SUNRISE
Is SCWA MATHER-SUNRISE water safe to drink?
SCWA MATHER-SUNRISE water receives a grade of A (93/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has SCWA MATHER-SUNRISE detected?
69 contaminants were tested in SCWA MATHER-SUNRISE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does SCWA MATHER-SUNRISE have any EPA violations?
Yes, SCWA MATHER-SUNRISE has 3 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MR. 1 are health-based violations.
How many people does SCWA MATHER-SUNRISE serve?
SCWA MATHER-SUNRISE serves approximately 30,825 people, California.
What type of water does SCWA MATHER-SUNRISE provide?
SCWA MATHER-SUNRISE 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 CA3410704.
How does SCWA MATHER-SUNRISE compare to other utilities in California?
SCWA MATHER-SUNRISE scores 93/100 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.