F15/100
LAKE BARRINGTON SHORES SUBDIVSION — Water Quality Report 2026
Serving 2,300 people · Illinois
Water Source
Groundwater
County
—
System ID
IL0975520
Violations
62
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
4
Violations (last 5yr)
4
Unresolved
1
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: August 22, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 2, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Treatment technique violation
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 BARRINGTON SHORES SUBDIVSION
Is LAKE BARRINGTON SHORES SUBDIVSION water safe to drink?
LAKE BARRINGTON SHORES SUBDIVSION water receives a grade of F (15/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 62 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LAKE BARRINGTON SHORES SUBDIVSION detected?
1 contaminants were tested in LAKE BARRINGTON SHORES SUBDIVSION's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does LAKE BARRINGTON SHORES SUBDIVSION have any EPA violations?
Yes, LAKE BARRINGTON SHORES SUBDIVSION has 62 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, RPT, TT. 5 are health-based violations.
How many people does LAKE BARRINGTON SHORES SUBDIVSION serve?
LAKE BARRINGTON SHORES SUBDIVSION serves approximately 2,300 people, Illinois. The system provides water to 1 community: Lake Barrington.
What type of water does LAKE BARRINGTON SHORES SUBDIVSION provide?
LAKE BARRINGTON SHORES SUBDIVSION sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0975520.
How does LAKE BARRINGTON SHORES SUBDIVSION compare to other utilities in Illinois?
LAKE BARRINGTON SHORES SUBDIVSION scores 15/100 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.