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O'FALLON WATER SYSTEM

Serving 1 city in IL

Action Needed
8 above health guidelines
140K
People Served
1
City
1
Water Sources
0
MCL Violations

Is O'FALLON WATER SYSTEM Water Safe to Drink?

O'FALLON WATER SYSTEM has reported 8 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 139,879 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.

O'FALLON WATER SYSTEM Service Area

O'FALLON WATER SYSTEM Contact & Information

Mailing Address

AHLVIN, JOSEPH 100 N. Water Works Dr. Belleville, IL 62223

Water Sources

Surface water

Treatment Methods

ConventionalFiltration

Disinfectant Used

Chloramines

Recommended Water Filters for O'FALLON WATER SYSTEM

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

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O'FALLON WATER SYSTEM Water Quality Report 2025 | O'Fallon, Illinois | Contact & Safety Data | TapWaterData