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Inventory of Water Service Lines Underway

Looking to Identify Water Service Lines Made with Lead

The City of St. Charles is performing an inventory of water service lines to identify lines made with lead, as required by the Illinois Lead Service Line Replacement & Notification Act. The water service line is the smaller pipe that delivers water from the City water main to homes or businesses. To collect information for the inventory, the City is sending water customers an online survey to complete, which includes instructions on how to identify their water service line material.

It’s important to note that the source of St. Charles’ drinking water does not contain lead and the City’s water mains are free of lead materials. However, lead was commonly used as a material in water service lines and home plumbing prior to the mid-1950s, and the practice was not banned until 1986.

The City of St. Charles is committed to providing clean, safe, reliable drinking water to all of residents and businesses. Because there are no records that indicate which homes may have lead water service lines, the City is relying on customers to identify the materials used for their water service lines.

This project is being conducted in phases. Each phase covers a select survey area. Customers will receive a letter in the mail when their neighborhood is scheduled to be surveyed. The letter contains information about the project as well as a link/QR Code to access the online survey. If you are unable to complete the survey on a computer or mobile device, call the Public Works Department at 630.377.4405 for assistance.

More information is on the City website at

created Jun 06, 2022 updated Jun 23, 2022