B71/100
LAKE BLUFF — Water Quality Report 2026
Serving 5,600 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0970750
Violations
14
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.008 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2023 – February 28, 2024Rule: Ground Water RuleEnforcement: 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 LAKE BLUFF
Is LAKE BLUFF water safe to drink?
LAKE BLUFF water receives a grade of B (71/100), 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 LAKE BLUFF detected?
31 contaminants were tested in LAKE BLUFF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does LAKE BLUFF have any EPA violations?
Yes, LAKE BLUFF has 14 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, TT. 3 are health-based violations.
How many people does LAKE BLUFF serve?
LAKE BLUFF serves approximately 5,600 people, Illinois. The system provides water to 1 community: Lake Bluff.
What type of water does LAKE BLUFF provide?
LAKE BLUFF 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 IL0970750.
How does LAKE BLUFF compare to other utilities in Illinois?
LAKE BLUFF scores 71/100 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.