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Testing & Installation

The experts at Five Star Plumbing are trained and licensed to install, test, and repair all types of commercial  backflow prevention devices for Cedar Rapids and Iowa City area businesses. We will arrange all the details of the test for you and make the whole process as easy as possible.

Up to Code

Stay Up to Code

State and local ordinance codes require the installation of backflow prevention devices in commercial properties. The size and complexity of the system is unique in every situation. Contact one of our Cedar Rapids and Iowa City commercial backflow testing specialists to find out more!


Plumbing issues never happen at a convenient time. We’re always available to help – 7 days a week, 24 hours a day, 365 days a year! 

How Does it Work?

A backflow prevention device also goes by the name of RPZ valve. RPZ standing for Reduced Pressure Zone. The device is installed on commercial plumbing systems to protect the public drinking water and the city supply from cross contamination.

RPZ valves are needed in buildings with irrigation systems, fire suppression systems or large boilers. The valves prevent the backflow of chemicals, stagnant water and bacteria from entering our water supply.

The state of Iowa requires the use of an RPZ valve in the plumbing code. All city governments comply with these laws. In addition to requiring a RPZ valve the law also mandates the devices be tested once per year by a licensed professional.

Once your valve is tested we submit all the paperwork to the city on your behalf.

Reduced Pressure Zone (RPZ) Valve

BackFlow Preventer Installation

Backflow RPZ Installation

If you’re looking for a commercial backflow preventer installation professional in the Cedar Rapids or Iowa City area, you’ve come to the right place! If your business doesn’t already have a RPZ valve installed, you should think about having one of our Cedar Rapids and Iowa City area plumbers install it for you. 

If you want to make sure your water supply is backflow and contaminant free, Five Star Pluming is the company to call! We are commercial backflow preventer installation and testing experts, and we serve many areas in Cedar Rapids and Iowa City.

Get in Touch with us

Whether your project is big or small, we’re here to help! Contact us by filling out the form below or call