Is DOWNERS GROVE's water safe to drink?
DOWNERS GROVE has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 49,425 people get their water from it, across 17,735 connections.
How this compares nationally
Out of 12,903 systems in this dataset, DOWNERS GROVE ranks 6,469th by violation burden (50th percentile) - 11 violations total, 2 health-baseds.
Against the IL average
DOWNERS GROVE's 2 health-based violations sit within the IL average of 5.0, across 560 systems statewide. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
DOWNERS GROVE's most recent violation on record is dated 2017-01-06, with the most recent health-based one dated 1999-01-04. Last reported to EPA: 05/27/2026.
The concern categories on record
DOWNERS GROVE's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What DOWNERS GROVE's record does not cover
This is what DOWNERS GROVE 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 11 logged violations can see. The guide to what this data misses covers that gap.