A99/100
POWAY, CITY OF — Water Quality Report 2026
Serving 49,888 people · California
Water Source
Surface Water
County
—
System ID
CA3710015
Violations
1
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1993.
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 POWAY, CITY OF
Is POWAY, CITY OF water safe to drink?
POWAY, CITY OF water receives a grade of A (99/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has POWAY, CITY OF detected?
69 contaminants were tested in POWAY, CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does POWAY, CITY OF have any EPA violations?
Yes, POWAY, CITY OF has 1 EPA violation(s) on record, with the most recent in 1993. Violation types include MR.
How many people does POWAY, CITY OF serve?
POWAY, CITY OF serves approximately 49,888 people, California. The system provides water to 1 community: Poway.
What type of water does POWAY, CITY OF provide?
POWAY, CITY OF sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA3710015.
How does POWAY, CITY OF compare to other utilities in California?
POWAY, CITY OF scores 99/100 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.