RPZ Testing
Safeguard your water supply and meet your annual RPZ testing requirements.
RPZ testing is essential to ensure your potable water source does not become contaminated.
Backflow Prevention
One of the most important components of a plumbing system is the ability to prevent backflow. Backflow happens when contaminants flow back into the potable water supply due to pressure drops in your plumbing system.
Reduced pressure zone (RPZ) valves protect your potable water supply. This valve monitors water pressure ensuring a constant flow of safe water — even if the pressure fluctuates.
For this reason, you must have your system routinely inspected for backflow.
Testable backflow devices are found in:
- Manufacturing facilities
- Food and beverage processing
- Healthcare facilities
- Schools and university
- Boilers
- Lawn irrigation systems
RPZ Testing

Minnesota Plumbing Code requires that all testable backflow devices be tested upon installation and at least annually after that by a certified backflow assembly tester.
Certified Testers
Our professionals performing the installation, maintenance, testing, repair, replacement or rebuilding of your backflow prevention assemblies are certified by the ASSE and listed with the Minnesota Department of Labor and Industry (DLI) as either a backflow prevention rebuilder and/or backflow prevention tester. They’ll take a thorough look at your device and make sure it is operating properly.
RPZ Services
Whether you need RPZ testing or a backflow device installation, contact us to schedule an appointment at 320-762-8645. Our services include:
- Backflow testing and certification
- Annual testing
- Rebuilding
- Certification
- Installation for residential, commercial, and industrial properties
- Potable water system audit
Join our Scheduled Maintenance Program
Stay ahead of the state testing requirements by allowing us to schedule your annual RPZ testing. Add the service to your new or existing preventive maintenance program. Let us remember the routine maintenance, so you don’t have to think about it.