F0/100
WYNSTONE WATER COMPANY — Water Quality Report 2026
Serving 1,424 people · Illinois
Water Source
Groundwater
County
—
System ID
IL0970080
Violations
52
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – August 19, 2024Enforcement: 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 WYNSTONE WATER COMPANY
Is WYNSTONE WATER COMPANY water safe to drink?
WYNSTONE WATER COMPANY water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 52 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WYNSTONE WATER COMPANY detected?
1 contaminants were tested in WYNSTONE WATER COMPANY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WYNSTONE WATER COMPANY have any EPA violations?
Yes, WYNSTONE WATER COMPANY has 52 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MCL, MR. 31 are health-based violations.
How many people does WYNSTONE WATER COMPANY serve?
WYNSTONE WATER COMPANY serves approximately 1,424 people, Illinois.
What type of water does WYNSTONE WATER COMPANY provide?
WYNSTONE WATER COMPANY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0970080.
How does WYNSTONE WATER COMPANY compare to other utilities in Illinois?
WYNSTONE WATER COMPANY scores 0/100 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.