C59/100
CREVE COEUR — Water Quality Report 2026
Serving 4,934 people · Illinois
Water Source
Groundwater
County
—
System ID
IL1790100
Violations
14
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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 CREVE COEUR
Is CREVE COEUR water safe to drink?
CREVE COEUR water receives a grade of C (59/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 14 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CREVE COEUR detected?
32 contaminants were tested in CREVE COEUR's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does CREVE COEUR have any EPA violations?
Yes, CREVE COEUR has 14 EPA violation(s) on record, with the most recent in 2017. Violation types include MR, MCL, Other. 4 are health-based violations.
How many people does CREVE COEUR serve?
CREVE COEUR serves approximately 4,934 people, Illinois.
What type of water does CREVE COEUR provide?
CREVE COEUR sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1790100.
How does CREVE COEUR compare to other utilities in Illinois?
CREVE COEUR scores 59/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Illinois state page for a full comparison of water systems.