A87/100
CARPENTERSVILLE — Water Quality Report 2026
Serving 37,983 people · Illinois
Water Source
Groundwater
County
—
System ID
IL0890200
Violations
2
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 CARPENTERSVILLE
Is CARPENTERSVILLE water safe to drink?
CARPENTERSVILLE water receives a grade of A (87/100), which is considered excellent. Out of 67 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CARPENTERSVILLE detected?
67 contaminants were tested in CARPENTERSVILLE's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does CARPENTERSVILLE have any EPA violations?
Yes, CARPENTERSVILLE has 2 EPA violation(s) on record, with the most recent in 2018. Violation types include Other, MR.
How many people does CARPENTERSVILLE serve?
CARPENTERSVILLE serves approximately 37,983 people, Illinois. The system provides water to 1 community: Carpentersville.
What type of water does CARPENTERSVILLE provide?
CARPENTERSVILLE sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0890200.
How does CARPENTERSVILLE compare to other utilities in Illinois?
CARPENTERSVILLE scores 87/100 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.