Dubuque Water Works, IA Water Quality
What's in Dubuque Water Works's water?
Dubuque Water Works's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 59,667 people get their water from it, across 23,954 connections.
How this compares nationally
Dubuque Water Works has 4 violations on record in total, 0 of them health-based - ranking it 11,301th of 12,903 systems by violation count, the 12th percentile nationally.
How Dubuque Water Works compares within IA
Dubuque Water Works's 0 health-based violations sit within the IA average of 3.5, across 203 systems statewide. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for Dubuque Water Works is from 2008-01-01. Last reported to EPA: 06/17/2026.
What this data is and is not
Everything on this page is Dubuque Water Works'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 4 logged violations can see. The guide to what this data misses covers that gap.