BUFFALO GROVE: EPA violation history, explained
BUFFALO GROVE has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 43,212 people get their water from it, across 12,271 connections.
BUFFALO GROVE's record against the rest of the country
6 total violations and 1 health-based ones put BUFFALO GROVE at the 34th percentile nationally for violation burden, rank 8,530 of 12,903.
How BUFFALO GROVE compares within IL
Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - BUFFALO GROVE's 1 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for BUFFALO GROVE is from 2024-01-10 (health-based: 1996-01-06). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
BUFFALO 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 this data is and is not
Everything on this page is BUFFALO GROVE's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 1 health-based violation on file for BUFFALO GROVE - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.