A93/100
SHELBYVILLE — Water Quality Report 2026
Serving 6,174 people · Illinois
Water Source
Groundwater
County
—
System ID
IL1730300
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Resolved
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: Resolving — corrective action underway
TIER 3Unresolved
Surface water treatment technique failure
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 SHELBYVILLE
Is SHELBYVILLE water safe to drink?
SHELBYVILLE water receives a grade of A (93/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has SHELBYVILLE detected?
31 contaminants were tested in SHELBYVILLE's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SHELBYVILLE have any EPA violations?
Yes, SHELBYVILLE has 4 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, Other, MR.
How many people does SHELBYVILLE serve?
SHELBYVILLE serves approximately 6,174 people, Illinois. The system provides water to 1 community: Shelbyville.
What type of water does SHELBYVILLE provide?
SHELBYVILLE sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1730300.
How does SHELBYVILLE compare to other utilities in Illinois?
SHELBYVILLE scores 93/100 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.