A96/100
ORLAND PARK — Water Quality Report 2026
Serving 58,862 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0312310
Violations
4
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
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 ORLAND PARK
Is ORLAND PARK water safe to drink?
ORLAND PARK water receives a grade of A (96/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has ORLAND PARK detected?
76 contaminants were tested in ORLAND PARK's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does ORLAND PARK have any EPA violations?
Yes, ORLAND PARK has 4 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR.
How many people does ORLAND PARK serve?
ORLAND PARK serves approximately 58,862 people, Illinois. The system provides water to 1 community: Orland Park.
What type of water does ORLAND PARK provide?
ORLAND PARK 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 IL0312310.
How does ORLAND PARK compare to other utilities in Illinois?
ORLAND PARK scores 96/100 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.