Is DAYTON WATER DEPT's water safe to drink?
DAYTON WATER DEPT had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 25,054 people get their water from it, across 9,636 connections.
How this compares nationally
Out of 12,903 systems in this dataset, DAYTON WATER DEPT ranks 1,911th by violation burden (85th percentile) - 50 violations total, 10 health-baseds.
Against the TN average
Among the 318 TN systems in this dataset, the average is 4.8 health-based violations - DAYTON WATER DEPT's 10 is above that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
DAYTON WATER DEPT's most recent violation on record is dated 2024-01-01, with the most recent health-based one dated 2024-01-01. Last reported to EPA: 05/14/2026.
The concern categories on record
DAYTON WATER DEPT'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); Interim Enhanced Surface Water Treatment Rule; Long Term 2 Enhanced Surface Water Treatment Rule
- Disinfection byproducts - flagged from: TTHM; Total Haloacetic Acids (HAA5)
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 DAYTON WATER DEPT's record does not cover
This is what DAYTON WATER DEPT reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. This record - 10 health-based violations on file for DAYTON WATER DEPT - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.