Quincy, IL Water Quality
What's in Quincy's water?
Quincy's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 42,000 people get their water from it, across 17,410 connections.
Quincy's record against the rest of the country
43 total violations and 0 health-based ones put Quincy at the 25th percentile nationally for violation burden, rank 9,650 of 12,903.
How Quincy compares within IL
IL's 572 covered systems average 5.1 health-based violations each; Quincy carries 0, not more than typical for the state. 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 Quincy is from 2025-01-07. Last reported to EPA: 05/27/2026.
What this data is and is not
Everything on this page is Quincy'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 43 logged violations can see. The guide to what this data misses covers that gap.