What's in SLEEPY HOLLOW's water?
SLEEPY HOLLOW has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 3,100 people get their water from it, across 1,015 connections.
How this compares nationally
SLEEPY HOLLOW has 18 violations on record in total, 4 of thems health-based - ranking it 4,228th of 12,903 systems by violation count, the 67th percentile nationally.
Against the IL average
IL's 560 covered systems average 5.0 health-based violations each; SLEEPY HOLLOW carries 4, not more than typical for the state. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
SLEEPY HOLLOW's most recent violation on record is dated 2026-01-01, with the most recent health-based one dated 2004-01-09. Last reported to EPA: 05/27/2026.
The concern categories on record
SLEEPY HOLLOW'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 SLEEPY HOLLOW's record does not cover
Everything on this page is SLEEPY HOLLOW's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 18 logged violations can see. The guide to what this data misses covers that gap.