Reduced Pressure Zone

RPZ Certification Downers Grove
  • 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 Downers Grove IL

What is RPZ?

RPZ stands for Reduced Pressure Zone and it refers to devices that prevent contaminated water from getting into the drinking water supply. These devices are typically utilized in fire sprinkler systems, laen irrigation systems, and other equipment. These devices are so essential that law requires for certification for installation of RPZ devices. It is also requires for an RPZ to be checked annually to make sure it is working in order.

Affordable & Prompt RPZ Certification.

If you need maintenance on your RPZ device, the professionals at MAS Plumbing are registered with Illinois EPA Division of Public Water and MAS Plumbing is fully certified. You can trust MAS Plumbing to make sure that contaminated water never goes where it is not supposee to, all at an affordable price! Call MAS plumbing today for RPZ service in Downers Grove and rest assured that your devices are compliant.




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

Backflow testing is required and is the best way to ensure 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 new device if one is needed. 




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