DENISON WATER SUPPLY: EPA violation history, explained

DENISON WATER SUPPLY's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 9,381 people get their water from it, across 2,930 connections.

How this compares nationally

Out of 12,903 systems in this dataset, DENISON WATER SUPPLY ranks 11,368th by violation burden (12th percentile) - 4 violations total, 0 health-baseds.

How DENISON WATER SUPPLY compares within IA

Among the 203 IA systems in this dataset, the average is 3.5 health-based violations - DENISON WATER SUPPLY's 0 is at or below 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 DENISON WATER SUPPLY is from 2000-01-10. Last reported to EPA: 06/17/2026.

What this data is and is not

DENISON WATER SUPPLY'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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 4 logged violations can see. The guide to what this data misses covers that gap.