What's in CITY OF DENISON's water?
CITY OF DENISON has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 27,500, over 17,626 connections.
Ranked against every other system in this dataset
CITY OF DENISON has 23 violations on record in total, 4 of thems health-based - ranking it 4,171th of 12,903 systems by violation count, the 68th percentile nationally.
How CITY OF DENISON compares within TX
Among the 1,633 TX systems in this dataset, the average is 6.7 health-based violations - CITY OF DENISON's 4 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for CITY OF DENISON is from 2025-02-07 (health-based: 2014-01-09). Last reported to EPA: 06/26/2026.
What kind of problem, specifically
CITY OF DENISON'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
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
Everything on this page is CITY OF DENISON's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 23 logged violations can see. The guide to what this data misses covers that gap.