A86/100
HIGHLAND PARK — Water Quality Report 2026
Serving 30,176 people · Illinois
Water Source
Surface Water
County
—
System ID
IL0970500
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.011 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2005.
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 HIGHLAND PARK
Is HIGHLAND PARK water safe to drink?
HIGHLAND PARK water receives a grade of A (86/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has HIGHLAND PARK detected?
76 contaminants were tested in HIGHLAND PARK's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does HIGHLAND PARK have any EPA violations?
Yes, HIGHLAND PARK has 3 EPA violation(s) on record, with the most recent in 2005. Violation types include TT, MR. 2 are health-based violations.
How many people does HIGHLAND PARK serve?
HIGHLAND PARK serves approximately 30,176 people, Illinois. The system provides water to 1 community: Highland Park.
What type of water does HIGHLAND PARK provide?
HIGHLAND PARK sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is IL0970500.
How does HIGHLAND PARK compare to other utilities in Illinois?
HIGHLAND PARK scores 86/100 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.