Cross-Connection Control Program

In order to keep your water safe, Illinois Environmental Protection Agency (IEPA) and Illinois Department of Public Health (IDPH) are responsible for ensuring that cross-connections do not occur. The Village of Caseyville must regularly survey its water customers to discover potential areas where non-potable water may come into contact with potable water and report that information to IEPA and IDPH, as appropriate.

If you have not submitted the survey during 2022, please chose one of the following:

Cross-Connection Survey Print a hard copy and return it in person to Village Hall or by mail to Village of Caseyville 909 S Main St Caseyville, IL 62232.

Cross-Connection Survey Fill-in Complete electronically and email to


What is a cross-connection?

A cross-connection is the physical link or channel that allows a potable (safe) water source in your home to come in contact with a non-potable (contaminated) water source, such as dirty water from washing machines, swimming pools, or water containing dangerous chemicals or pesticides. A potentially hazardous cross-connection occurs every time someone uses a garden home sprayer to apply insecticides or herbicides to his/her lawn or by placing the hose in a bucket of car wash solution while washing his/her car. Another cross-connection occurs when someone uses his/her garden hose to clear a stoppage in a sewer line.

What is a backflow?

Backflow occurs when the public water system experiences a drop in pressure. During this drop, the water flow can be reversed; water and other chemicals can flow back through a pipe or hose and into the public water system. As the system returns to normal, this contaminated water may flow out to another location.

What are the purposes of the Cross-Connection Control Program?
  1. To protect the public water supply from contamination or pollution by isolating the water system from contaminates or pollutants which could backflow through the service connection into the public water supply system.
  2. To promote the elimination or control of existing cross-connection, actual or potential, between the public potable water system and non-potable water system, plumbing fixtures and sources or systems contaminating substances of unknown or questionable quality.
  3. To provide for the maintenance of a continuing program of cross-connection control, which will prevent the contamination or pollution of the public potable water supply system.