A94/100
DUVALL CITY OF — Water Quality Report 2026
Serving 10,267 people · Washington
Water Source
Purchased Surface Water
County
—
System ID
WA5320750
Violations
6
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2014.
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 DUVALL CITY OF
Is DUVALL CITY OF water safe to drink?
DUVALL CITY OF water receives a grade of A (94/100), which is considered excellent. Out of 50 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has DUVALL CITY OF detected?
50 contaminants were tested in DUVALL CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does DUVALL CITY OF have any EPA violations?
Yes, DUVALL CITY OF has 6 EPA violation(s) on record, with the most recent in 2014. Violation types include MR.
How many people does DUVALL CITY OF serve?
DUVALL CITY OF serves approximately 10,267 people, Washington.
What type of water does DUVALL CITY OF provide?
DUVALL CITY OF 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 WA5320750.
How does DUVALL CITY OF compare to other utilities in Washington?
DUVALL CITY OF scores 94/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Washington state page for a full comparison of water systems.