Reduced Pressure Zone

RPZ Certification Service in Glenview
  • Required reporting to municipalities and testing companies
  • Installation and repair of RPZ devices
  • Testing and certification of devices
  • Annual reminders of required PRZ testing
Since 1999

RPZ Certification, Installation & Maintenance Service

Backflow Testing &  RPZ Certification Service in Glenview, Illinois.

MAS Plumbing is fully certified to install and maintain your RPZ device. An RPZ known as the Reduced Pressure Zone, device is essential in keeping the drinking water supply safe. In Glenview, Illinois it is required by law to get the backflow tested annually to ensure safety. The highly trained technicians at MAS Plumbing are registered with Illinois EPA Division of Public Water and are available for installation and maintenance of RPZ devices in Glenview and the surrounding areas.



To ensure safe water, a backflow preventer test is required at least annually in almost all towns and villages in the Chicagoland area.

Let MAS Plumbing handle the testing of the backflow, and make sure that your backflow prevention device is working properly. As per Illinois law, your backflow device needs to be certified. You don’t want contaminated water getting into you kitchen or bathroom. You can trust MAS Plumbing to make sure everything is running properly and for the installation of a device if one is needed. Learn more about our Commercial Plumbing Services and New Construction Services.

How Does a RPZ Device Work?

The RPZ device consists of two independent check valves with a pressure monitored chamber between. The chamber is maintained at a pressure that is lower than the water supply pressure, but high enough to be useful downstream. The reduced pressure is guaranteed by a differential pressure relief valve, which automatically relieves excess pressure in the chamber by discharging to a drain. 4 test cocks are installed to allow an inspector to verify proper operation of the valve with a differential pressure meter. Two gate valves (one before and one after the RPZ) are provided to allow for testing and repair.

The experience team of technicians we have here at MAS Plumbing extends far beyond the professional installation of essential RPZ valves. In fact our team can provide all the required testing and certification of RPZ valves for both residential and commercial use. During the RPZ certification process for your Glenview Illinois property, one of our licensed plumbers will create an inspection reports to be submitted to the Glenview area water authority.



Get Started

Schedule An Appointment
Or Get an Instant Quote

View Client Reviews

Call Now Button