DES PLAINES: EPA violation history, explained

DES PLAINES's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. It serves 60,675 people through 17,080 service connections.

Ranked against every other system in this dataset

DES PLAINES has 7 violations on record in total, 0 of thems health-based - ranking it 10,742th of 12,903 systems by violation count, the 17th percentile nationally.

How DES PLAINES compares within IL

Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - DES PLAINES's 0 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 DES PLAINES is from 2026-01-01. Last reported to EPA: 05/27/2026.

What this data is and is not

This is what DES PLAINES 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. Between the utility's meter and DES PLAINES's customers' taps is household plumbing, invisible to a system-level record ranked 10,742th of 12,903 by violation count. The guide to what this data misses covers that gap.