Is DUPO's water safe to drink?

DUPO's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 4,684 people get their water from it, across 2,165 connections.

How this compares nationally

DUPO has 4 violations on record in total, 0 of thems health-based - ranking it 11,434th of 12,903 systems by violation count, the 11th percentile nationally.

Against the IL average

IL's 560 covered systems average 5.0 health-based violations each; DUPO carries 0, not more than typical for the state. See the lead and copper guide for why lead counts differently.

Most recent violation on record

DUPO's most recent violation on record is dated 2024-01-07. Last reported to EPA: 05/27/2026.

What DUPO's record does not cover

This is what DUPO 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. 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.