A81/100
LIBERTYVILLE — Water Quality Report 2026
Serving 20,500 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0970900
Violations
11
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.025 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2008.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About LIBERTYVILLE
Is LIBERTYVILLE water safe to drink?
LIBERTYVILLE water receives a grade of A (81/100), which is considered excellent. Out of 76 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has LIBERTYVILLE detected?
76 contaminants were tested in LIBERTYVILLE's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does LIBERTYVILLE have any EPA violations?
Yes, LIBERTYVILLE has 11 EPA violation(s) on record, with the most recent in 2008. Violation types include MR.
How many people does LIBERTYVILLE serve?
LIBERTYVILLE serves approximately 20,500 people, Illinois. The system provides water to 1 community: Libertyville.
What type of water does LIBERTYVILLE provide?
LIBERTYVILLE sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is IL0970900.
How does LIBERTYVILLE compare to other utilities in Illinois?
LIBERTYVILLE scores 81/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Illinois state page for a full comparison of water systems.