B72/100
CASEYVILLE — Water Quality Report 2026
Serving 13,798 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL1630250
Violations
16
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2023Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 CASEYVILLE
Is CASEYVILLE water safe to drink?
CASEYVILLE water receives a grade of B (72/100), which is considered good. Out of 69 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CASEYVILLE detected?
69 contaminants were tested in CASEYVILLE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CASEYVILLE have any EPA violations?
Yes, CASEYVILLE has 16 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MON, Other. 3 are health-based violations.
How many people does CASEYVILLE serve?
CASEYVILLE serves approximately 13,798 people, Illinois. The system provides water to 1 community: Caseyville.
What type of water does CASEYVILLE provide?
CASEYVILLE 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 IL1630250.
How does CASEYVILLE compare to other utilities in Illinois?
CASEYVILLE scores 72/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Illinois state page for a full comparison of water systems.