A92/100
GLEN ELLYN — Water Quality Report 2026
Serving 28,850 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0430450
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
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 GLEN ELLYN
Is GLEN ELLYN water safe to drink?
GLEN ELLYN water receives a grade of A (92/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GLEN ELLYN detected?
69 contaminants were tested in GLEN ELLYN's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does GLEN ELLYN have any EPA violations?
Yes, GLEN ELLYN has 5 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR.
How many people does GLEN ELLYN serve?
GLEN ELLYN serves approximately 28,850 people, Illinois. The system provides water to 1 community: Glen Ellyn.
What type of water does GLEN ELLYN provide?
GLEN ELLYN 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 IL0430450.
How does GLEN ELLYN compare to other utilities in Illinois?
GLEN ELLYN scores 92/100 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.