F0/100
CASEY — Water Quality Report 2026
Serving 3,274 people · Illinois
Water Source
Purchased Groundwater
County
—
System ID
IL0230050
Violations
38
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.70 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
2
Unresolved
0
Health-Related
TIER 3Unresolved
Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 2, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – June 16, 2023Enforcement: 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 CASEY
Is CASEY water safe to drink?
CASEY water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 38 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CASEY detected?
32 contaminants were tested in CASEY's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does CASEY have any EPA violations?
Yes, CASEY has 38 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, Other, TT. 16 are health-based violations.
How many people does CASEY serve?
CASEY serves approximately 3,274 people, Illinois. The system provides water to 1 community: Casey.
What type of water does CASEY provide?
CASEY sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0230050.
How does CASEY compare to other utilities in Illinois?
CASEY scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Illinois state page for a full comparison of water systems.