A83/100
FOREST PARK — Water Quality Report 2026
Serving 14,340 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL0310900
Violations
6
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
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
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 FOREST PARK
Is FOREST PARK water safe to drink?
FOREST PARK water receives a grade of A (83/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has FOREST PARK detected?
69 contaminants were tested in FOREST PARK's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does FOREST PARK have any EPA violations?
Yes, FOREST PARK has 6 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, Other, MR. 2 are health-based violations.
How many people does FOREST PARK serve?
FOREST PARK serves approximately 14,340 people, Illinois. The system provides water to 1 community: Forest Park.
What type of water does FOREST PARK provide?
FOREST 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 IL0310900.
How does FOREST PARK compare to other utilities in Illinois?
FOREST PARK scores 83/100 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.