B70/100
BERKELEY — Water Quality Report 2026
Serving 5,214 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0310180
Violations
11
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.007 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2004.
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 BERKELEY
Is BERKELEY water safe to drink?
BERKELEY water receives a grade of B (70/100), which is considered good. 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 BERKELEY detected?
31 contaminants were tested in BERKELEY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does BERKELEY have any EPA violations?
Yes, BERKELEY has 11 EPA violation(s) on record, with the most recent in 2004. Violation types include Other, MR, MCL. 4 are health-based violations.
How many people does BERKELEY serve?
BERKELEY serves approximately 5,214 people, Illinois. The system provides water to 1 community: Berkeley.
What type of water does BERKELEY provide?
BERKELEY 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 IL0310180.
How does BERKELEY compare to other utilities in Illinois?
BERKELEY scores 70/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Illinois state page for a full comparison of water systems.