STREAMWOOD: EPA violation history, explained
STREAMWOOD has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 39,577, over 13,124 connections.
Ranked against every other system in this dataset
STREAMWOOD has 6 violations on record in total, 2 of thems health-based - ranking it 6,759th of 12,903 systems by violation count, the 48th percentile nationally.
How STREAMWOOD compares within IL
IL's 560 covered systems average 5.0 health-based violations each; STREAMWOOD carries 2, 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 STREAMWOOD is from 2022-06-12 (health-based: 1998-01-10). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
STREAMWOOD'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
This is what STREAMWOOD 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. This record - 2 health-based violations on file for STREAMWOOD - 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.