A86/100
AMBOY — Water Quality Report 2026
Serving 2,500 people · Illinois
Water Source
Groundwater
County
—
System ID
IL1030050
Violations
3
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.50 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.010 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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 AMBOY
Is AMBOY water safe to drink?
AMBOY water receives a grade of A (86/100), which is considered excellent. Out of 2 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has AMBOY detected?
2 contaminants were tested in AMBOY's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does AMBOY have any EPA violations?
Yes, AMBOY has 3 EPA violation(s) on record, with the most recent in 2017. Violation types include Other, MR.
How many people does AMBOY serve?
AMBOY serves approximately 2,500 people, Illinois. The system provides water to 1 community: Amboy.
What type of water does AMBOY provide?
AMBOY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1030050.
How does AMBOY compare to other utilities in Illinois?
AMBOY scores 86/100 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.