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Backflow Prevention

Tucson Water's backflow prevention program is part of our commitment to delivering safe, high quality water. When a water line is connected to equipment containing a nonpotable substance, this is known as a cross-connection. Contamination may occur when water flows through a cross-connection from a nonpotable source, such as a sprinkler system or heating and cooling unit, into the potable water system. This can happen through a process known as backflow.

There are more than 30,000 backflow prevention assemblies in use in the Tucson Water service area. The Arizona Department of Environmental Quality requires that each be tested annually. A list of Tucson Water-approved Certified Testers is available on this website or by calling (520) 791-2650.

The links below lead to more information about Tucson Water's Backflow Prevention program. Si usted desea información en Español, llame (520) 791-4331.

General Information

Testers and Contractors

Regulations