A97/100
WALNUT HILL — Water Quality Report 2026
Serving 1,180 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL1210600
Violations
3
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
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: October 1, 2024 – December 31, 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 WALNUT HILL
Is WALNUT HILL water safe to drink?
WALNUT HILL water receives a grade of A (97/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has WALNUT HILL detected?
1 contaminants were tested in WALNUT HILL's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does WALNUT HILL have any EPA violations?
Yes, WALNUT HILL has 3 EPA violation(s) on record, with the most recent in 2024. Violation types include MR.
How many people does WALNUT HILL serve?
WALNUT HILL serves approximately 1,180 people, Illinois. The system provides water to 1 community: Walnut Hill.
What type of water does WALNUT HILL provide?
WALNUT HILL 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 IL1210600.
How does WALNUT HILL compare to other utilities in Illinois?
WALNUT HILL scores 97/100 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.