Cross Connection Survey
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Backflow preventers allow Village water to be used at homes and businesses, but blocks water from coming back into the distribution system, allowing water to only flow in one direction. They help to keep the Village's potable (drinkable) water free from contaminants that might compromise public health.
BSIOnline is a contractor of the Village and may contact you for compliance regarding backflow testing, repairs, or installations. BSIOnline can also be reached locally at (800) 414-4990 with any questions or visit their website at www.bsionlinetracking.com.
Overview of the Program
All communities within the State of Illinois that provide public water supplies are required to maintain a cross connection control program (CCCP). A cross connection is any temporary or permanent connection between a public water system and a consumer’s potable water system. Typical cross connections for residential properties are auxiliary water systems, heating & cooling systems and irrigation systems. A CCCP is intended to protect the safety of water supply systems by reducing the exposure to the unwanted reversal of flow (backflow) of non-potable water through a cross connection.
- Conduct a biennial CCC device survey of all water customers
- Verify annual testing of all CCC devices
- Maintain detail records of all CCC devices
Testing Program Requirements
Backflow Prevention Device Examples
Backflows due to cross connections are serious plumbing problems. They can cause sickness and even death. However, backflow can be controlled by the use of proper protection devices. The following are three examples:
Who should I contact for more information?
What is a Cross Connection?
A cross connection is a link between a potable water system and a non-potable water system. Typical cross connections within residential properties involve auxiliary water systems, heating & cooling systems and irrigation systems. Backflow can occur through any of these cross-connections.
What is Backflow?
Backflow is the reversal of the normal flow of water. It can happen as a result of a sudden change in water pressure and can allow contaminants to get siphoned back into a private plumbing system, and potentially into the public water supply. There are two types of backflow: “Back Pressure” and “Back Siphonage”.
“Back Pressure” – a pressure greater than the supply pressure that may cause backflow (e.g., High-pressure boiler or pressure washer).
“Back Siphonage” – the creation of a backflow as a result of negative pressure (e.g., Water main break or use of fire hydrants).
What causes Backflow?
Backflow can be caused by a sudden drop in the water pressure in a public water main, which can create a sub-atmospheric condition. For example, if a drop in pressure occurs while a hose is in a bucket of dirty water, that water could be drawn back into the public water system, potentially contaminating the water for other users. A drop in pressure could be caused by a variety of things, including a water main break, a fire requiring water suppression, or the loss of power at a water pumping station.
What are the Hazards?
A backflow incident can cause any substance that can come into contact with water to backflow into the public water system contaminating the drinking water. The potential list of possible contaminants is unlimited. Throughout the United States, there are hundreds of documented incidents and probably thousands of undocumented cases. Once in the distribution system, it is impossible to determine the fate of the contaminant due to many variables such as the chemical and physical properties of the contaminant, the point of entry, and pressure and flow within the system.
Does the typical residence need backflow protection?
Most definitely! In fact over half of the documented backflow incidents across the nation have originated from garden hose connections and underground irrigation systems.
Can Backflow be prevented?
Yes it can. Backflow can be controlled by installing a backflow prevention assembly where cross-connections exist and cannot otherwise be eliminated. There are two different types of backflow devices used in Glencoe residential applications: Reduced Pressure Zone and Dual Check with Vent. The devices are installed at the primary point of entry of the water service or on the particular plumbing device that needs backflow protection and, when properly maintained, should prevent a backflow from occurring.
What should I do?
If you have an underground sprinkler system, swimming pool, hot tub, fire suppression system, or hot water heating system that does not have a backflow prevention device, you must have one installed to comply with the law and to protect you and your family's health. Begin the process by selecting a licensed plumber to install the new backflow device. Please keep in mind that some plumbing contractors are qualified to perform both the device installation and device testing. That is a point to consider during your selection process. If you need assistance in finding a plumber, please call the Public Works office in the Village Hall at (847) 835-4111 for a list of licensed plumbers that are registered to work in Glencoe. After choosing a plumber, instruct them to get a plumbing permit before performing any work. Permits are available at the Resident Services Counter located in the Village Hall. Have the device installed, tested, and the results registered with BSIOnline by a certified testing company.
Download a list of Backflow Testing companies here.