Bolingbrook’s backflow testing is needed for a number of reasons. In order for the Village to be able to officially recognize the device it has to be tested to confirm that it is in working order and able to protect your water. Under normal circumstances our water system is pressurized and flows in only one direction so nothing potentially harmful can be introduced into the water supply. If a backflow device was malfunctioning during an event where a large change in pressure acts on the Village’s water supply, any chemicals or waste downstream from the backflow valve could start getting sucked back up into the potable water supply. This could happen if a device is too rusted, debris blocks a valve, it has been tampered with or a number of other possibilities. During a backflow test our inspectors will open the device so they can check for debris, rust, or other issues. They will test the chambers and can also test emergency release functions of the pieces. Bolingbrook residents that have a backflow device could need testing every year or every other year by a licensed professional and have their results sent to the Village to ensure they are working.

Cross connections are potential or actual connections between two separate water systems, most likely occurring on potable water lines, with another water line of varying quality or chemicals. This can come in the form of an incorrect connection on a pipe somewhere, or a low hanging faucet or hose with the potential for liquid to come in contact with the end. A cross connection becomes hazardous when there is no backflow device and a drop in pressure effects the water system. Bolingbrook enforces backflow testing regularly to prevent catastrophes from happening that could result in serious health problems and costly accidents for everyone involved.