F0/100
DAYTON, CITY OF — Water Quality Report 2026
Serving 2,535 people · Oregon
Water Source
Groundwater
County
—
System ID
OR4100252
Violations
94
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – July 11, 2024Enforcement: Resolving — corrective action underway
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, CITY OF
Is DAYTON, CITY OF water safe to drink?
DAYTON, CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 94 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has DAYTON, CITY OF detected?
1 contaminants were tested in DAYTON, CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does DAYTON, CITY OF have any EPA violations?
Yes, DAYTON, CITY OF has 94 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR, TT. 5 are health-based violations.
How many people does DAYTON, CITY OF serve?
DAYTON, CITY OF serves approximately 2,535 people, Oregon.
What type of water does DAYTON, CITY OF provide?
DAYTON, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OR4100252.
How does DAYTON, CITY OF compare to other utilities in Oregon?
DAYTON, CITY OF scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Oregon state page for a full comparison of water systems.