F17/100
HUNTLEY — Water Quality Report 2026
Serving 28,495 people · Illinois
Water Source
Groundwater
County
—
System ID
IL1110350
Violations
23
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
1
Health-Related
TIER 1 — URGENTUnresolved
Maximum Contaminant Level Violation
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 HUNTLEY
Is HUNTLEY water safe to drink?
HUNTLEY water receives a grade of F (17/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 23 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has HUNTLEY detected?
66 contaminants were tested in HUNTLEY's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does HUNTLEY have any EPA violations?
Yes, HUNTLEY has 23 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, MR. 15 are health-based violations.
How many people does HUNTLEY serve?
HUNTLEY serves approximately 28,495 people, Illinois. The system provides water to 1 community: Huntley.
What type of water does HUNTLEY provide?
HUNTLEY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1110350.
How does HUNTLEY compare to other utilities in Illinois?
HUNTLEY scores 17/100 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.