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THORNTON WATER SYSTEM

Serving 1 city in IL

Action Needed
9 above health guidelines
23K
People Served
1
City
1
Water Sources
0
MCL Violations

THORNTON WATER SYSTEM Water Quality Grade

F
Failing

Significant water quality issues. Filter recommended.

Quality Score10/100
9
Above Health Guidelines
0
EPA Violations

Grade is calculated based on contaminants exceeding health guidelines (MCLG) and EPA Maximum Contaminant Level violations. A = Excellent (90-100), B = Good (80-89), C = Fair (70-79), D = Poor (60-69), F = Failing (<60).

Is THORNTON WATER SYSTEM Water Safe to Drink?

THORNTON WATER SYSTEM has reported 9 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.

This utility serves 22,500 people across 1 city in IL. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.

THORNTON WATER SYSTEM Service Area

THORNTON WATER SYSTEM Contact & Information

For hours of operation and emergency contact information, please visit the official utility website or call the main phone number.

Water Sources & Treatment

Water Sources

Surface water purchased

Treatment Methods

Not specified

Recommended Water Filters for THORNTON WATER SYSTEM

Based on water quality data from cities served by THORNTON WATER SYSTEM, we recommend NSF-certified filters that can remove contaminants above health guidelines.

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THORNTON WATER SYSTEM Water Quality 2026: Is It Safe? | Thornton, Illinois | TapWaterData