(Check with your state and local authorities for specific rules and regulations.The information below is intended to be a general guideline and for informational purposes only.)
What is a Cross-Connection? An actual or possible pathway (link/connection) between a potable (drinking water) & non-potable system which could result in pollution or contamination.An example is the common garden hose attached to a service sink with end of the hose submerged in a tub full of detergent. What is a Cross-Connection Control Program? Cross-Connection Controlis an organized and structured program to eliminate, monitor, protect and prevent cross-connections from allowing backflow.It is a cooperative effort between plumbing and health officials, water purveyors, property owners and certified testers to establishand administer guidelines for controlling cross-connections.It’s purpose is to ensure that the public water supply will be protected both in the city main and within buildings.
What is backflow? The undesirable reversal of flow of a liquid, gas, or other substance in a potable water distribution piping system as a result of a cross-connection. To prevent backflow from occurring at the point of a cross-connection, a backflow prevention assembly or device must be installed. There are two types of backflow, backpressure and backsiphonage. What is a backflow preventer? An approved assembly, device, or method that prohibits the backflow of water into potable water supply systems.
Click Here for photos/examples of sample Backflow Prevention Devices and Assemblies Click Here for ASSE Backflow Prevention Device & Assembly Approval Listings Click Here for USC Foundation for Cross-Connection Control listing of Approved Assemblies Will a backflow prevention assembly or device affect my water pressure? Yes, essentially all cross-connection control assemblies and devices cause some degree of pressure loss.The typical pressure drop across a device depends on the type, make, size and location of the device or assembly.Refer to manufacturer’s literature and consult with approved installation providers for additional information. I received a letter stating that the appropriate cross-connection control assemblies or devices must be installed in order to comply with the State Laws / Local Ordinances.What am I required to do on my property? Contact a Licensed Plumber or other approved contractor/tester to install the cross-connection control assembly or device on the identified water supply.Check with your local plumbing or building department regarding regulations for permit requirements. I received a letter stating that my cross-connection control assemblies are due for testing.What am I required to do? Where can I obtain a list of certified testers? Contact a certified tester, plumber or other approved contractor to test and submit the test reports to the appropriate agency, agency representative and water purveyor.Contact your local water utility for a listing of certified testers or contact our office at 800-690-6651.
In Wisconsin, a list/search can be obtained for Cross Connection Control Tester: Click Here
Why do backflow prevention assemblies have to be tested periodically? (Typically annually or semi-annually depending on state and local regulations.Also at time of installation, immediately after repairs or relocation.) Backflow prevention assemblies have internal seals, springs and moving parts that are subject to fouling, wear or fatigue.Routine testing helps ensure that the mechanical device is in properworking order. Will my water service be interrupted for backflow prevention assembly testing? Yes, the ASSE standard testing procedures require that the water service be interrupted during the course of the testing process.Depending on the type of assembly, the time for testing typically takes 10-30 minutes.Additional time may be needed if repairs are required. How much will it cost to have my backflow prevention assembly tested? The cost for testing will/may vary depending on the size of the assembly, the location of the assembly and if the assembly is to be tested during normal working hours.Testing prices vary by firms/individuals certified to test.You are encouraged to obtain multiple quotes for comparison. Wisconsin Only – What is an RO # and how do I get one?
RO# = Regulated Object Number which refers to any testable backflow assembly except DCV’s (Double Check Valves). To acquire the RO# you must file with the Wisconsin Department of Commerce at http://www.commerce.state.wi.us/SB/SB-DivForms.html#plumbing for applicable forms
Click Here for a list of facilities that generally require some type of backflow protection.
Click on link below for photos of common Cross-Connections.
