B76/100
HARWOOD HEIGHTS — Water Quality Report 2026
Serving 9,065 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0311140
Violations
9
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 2020.
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 HARWOOD HEIGHTS
Is HARWOOD HEIGHTS water safe to drink?
HARWOOD HEIGHTS water receives a grade of B (76/100), 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 HARWOOD HEIGHTS detected?
31 contaminants were tested in HARWOOD HEIGHTS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does HARWOOD HEIGHTS have any EPA violations?
Yes, HARWOOD HEIGHTS has 9 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, Other, MCL. 3 are health-based violations.
How many people does HARWOOD HEIGHTS serve?
HARWOOD HEIGHTS serves approximately 9,065 people, Illinois. The system provides water to 1 community: Harwood Heights.
What type of water does HARWOOD HEIGHTS provide?
HARWOOD HEIGHTS 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 IL0311140.
How does HARWOOD HEIGHTS compare to other utilities in Illinois?
HARWOOD HEIGHTS scores 76/100 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.