B71/100
DAYTON WATER DEPARTMENT — Water Quality Report 2026
Serving 3,283 people · Washington
Water Source
Groundwater
County
—
System ID
WA5318250
Violations
13
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 DAYTON WATER DEPARTMENT
Is DAYTON WATER DEPARTMENT water safe to drink?
DAYTON WATER DEPARTMENT water receives a grade of B (71/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has DAYTON WATER DEPARTMENT detected?
1 contaminants were tested in DAYTON WATER DEPARTMENT's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does DAYTON WATER DEPARTMENT have any EPA violations?
Yes, DAYTON WATER DEPARTMENT has 13 EPA violation(s) on record, with the most recent in 2018. Violation types include Other, MR, MCL. 4 are health-based violations.
How many people does DAYTON WATER DEPARTMENT serve?
DAYTON WATER DEPARTMENT serves approximately 3,283 people, Washington.
What type of water does DAYTON WATER DEPARTMENT provide?
DAYTON WATER DEPARTMENT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5318250.
How does DAYTON WATER DEPARTMENT compare to other utilities in Washington?
DAYTON WATER DEPARTMENT scores 71/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Washington state page for a full comparison of water systems.