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Public Water System
VERNON HILLS - LAKE CO PW
PWSID IL0971750 · Illinois · 33,207 people served
A
ExcellentVERNON HILLS - LAKE CO PW is an EPA-regulated public water system in Illinois (PWSID IL0971750). It serves an estimated 33,207 residents — a small city of customers — across 1 community across 1 ZIP code.
VERNON HILLS - LAKE CO PW has maintained full EPA Safe Drinking Water Act compliance over the most recent five-year reporting window. No health-based Maximum Contaminant Level (MCL) exceedances are on record. The grade of A reflects this clean compliance history.
Service Area
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Centered on the averaged ZIP-code centroid of 1 ZIP served.
Population
33,207
Cities
1
ZIPs
1
Violations
0
EPA Health-Based Violations
Health-based Maximum Contaminant Level (MCL) violations on file for VERNON HILLS - LAKE CO PW over the past five years of EPA SDWIS reporting.
✅
No health-based violations in the last 5 years.
VERNON HILLS - LAKE CO PW's water systems have met EPA health-based Maximum Contaminant Level (MCL) requirements throughout the EPA reporting window. This does not mean zero detection of regulated contaminants — it means all measured concentrations remained below their federal action levels.
Cities Served by VERNON HILLS - LAKE CO PW
ZIP Codes Served
About this system
EPA records this system as PWSID IL0971750. Data reflects the most recent EPA SDWIS publication as of 2026-05-18. Public Water System Identifiers (PWSIDs) are assigned by the EPA's Safe Drinking Water Act program to track every regulated water utility in the United States. The first two letters typically indicate the state primacy agency. For real-time water quality information, contact VERNON HILLS - LAKE CO PW directly or review their annual Consumer Confidence Report (CCR).
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