What's in HOFFMAN ESTATES's water?
HOFFMAN ESTATES has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 50,179 people through 15,742 service connections.
HOFFMAN ESTATES's record against the rest of the country
10 total violations and 7 health-based ones put HOFFMAN ESTATES at the 78th percentile nationally for violation burden, rank 2,851 of 12,903.
How HOFFMAN ESTATES compares within IL
Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - HOFFMAN ESTATES's 7 is above that. 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 HOFFMAN ESTATES is from 1994-01-03 (health-based: 1994-01-03). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
HOFFMAN ESTATES'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)
- Radionuclides - flagged from: Gross Alpha, Excl. Radon and U
- Other regulated metals - flagged from: Barium
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 this data is and is not
HOFFMAN ESTATES's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and HOFFMAN ESTATES's customers' taps is household plumbing, invisible to a system-level record ranked 2,851th of 12,903 by violation count. The guide to what this data misses covers that gap.