Reduced Pressure Zone

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

RPZ Certification, Installation & Maintenance Service Carol Stream Illinois

Affordable & Prompt RPZ Certification.

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



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




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