What's in MCHENRY's water?
MCHENRY has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 22,335 people through 8,484 service connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, MCHENRY ranks 6,078th by violation burden (53th percentile) - 29 violations total, 2 health-baseds.
Against the IL average
IL's 560 covered systems average 5.0 health-based violations each; MCHENRY 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
MCHENRY's most recent violation on record is dated 2025-01-07, with the most recent health-based one dated 1996-01-08. Last reported to EPA: 05/27/2026.
The concern categories on record
MCHENRY'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:
- Lead & copper - flagged from: Lead and Copper Rule
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What MCHENRY's record does not cover
This is what MCHENRY 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 MCHENRY - 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.