A84/100
GLEN CARBON — Water Quality Report 2026
Serving 12,618 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL1190300
Violations
13
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
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 CARBON
Is GLEN CARBON water safe to drink?
GLEN CARBON water receives a grade of A (84/100), which is considered excellent. Out of 66 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 CARBON detected?
66 contaminants were tested in GLEN CARBON's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does GLEN CARBON have any EPA violations?
Yes, GLEN CARBON has 13 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR.
How many people does GLEN CARBON serve?
GLEN CARBON serves approximately 12,618 people, Illinois. The system provides water to 1 community: Glen Carbon.
What type of water does GLEN CARBON provide?
GLEN CARBON 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 IL1190300.
How does GLEN CARBON compare to other utilities in Illinois?
GLEN CARBON scores 84/100 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.