A83/100
ELMHURST — Water Quality Report 2026
Serving 45,000 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0430350
Violations
6
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.006 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2012.
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 ELMHURST
Is ELMHURST water safe to drink?
ELMHURST water receives a grade of A (83/100), 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 ELMHURST detected?
76 contaminants were tested in ELMHURST's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ELMHURST have any EPA violations?
Yes, ELMHURST has 6 EPA violation(s) on record, with the most recent in 2012. Violation types include Other, MR, MCL. 2 are health-based violations.
How many people does ELMHURST serve?
ELMHURST serves approximately 45,000 people, Illinois. The system provides water to 1 community: Elmhurst.
What type of water does ELMHURST provide?
ELMHURST 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 IL0430350.
How does ELMHURST compare to other utilities in Illinois?
ELMHURST scores 83/100 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.