Is DAYTON WATER DEPARTMENT's water safe to drink?
DAYTON WATER DEPARTMENT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 3,374 people get their water from it, across 1,483 connections.
DAYTON WATER DEPARTMENT's record against the rest of the country
DAYTON WATER DEPARTMENT has 14 violations on record in total, 4 of thems health-based - ranking it 4,300th of 12,903 systems by violation count, the 67th percentile nationally.
How DAYTON WATER DEPARTMENT compares within WA
Among the 322 WA systems in this dataset, the average is 3.7 health-based violations - DAYTON WATER DEPARTMENT's 4 is above that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for DAYTON WATER DEPARTMENT is from 2018-01-07 (health-based: 1998-01-07). Last reported to EPA: 06/19/2026.
What kind of problem, specifically
DAYTON WATER DEPARTMENT's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
DAYTON WATER DEPARTMENT's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and DAYTON WATER DEPARTMENT's customers' taps is household plumbing, invisible to a system-level record ranked 4,300th of 12,903 by violation count. The guide to what this data misses covers that gap.