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RPZ water backflow testing in Joliet area
Annual commercial cross-connection water backflow testing is not just a legal requirement; it's a crucial step in safeguarding our community. We ensure the safety of your employees and customers from water backflow contamination.
Throughout our history, we have always put ourselves in your shoes.
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Our Expertise:
- Certified RPZ Plumbers: Our highly trained and certified PDM plumbers meticulously inspect, clean, adjust, calibrate, and repair your RPZ water backflow preventers to ensure optimal performance.
- Beyond Plumbing: We're not just plumbers; we're your water safety experts. Water filtering, sewer backflow protection, sump pump expert, even your HVAC service center
- Award-Winning Team: Experience the difference of working with an award-winning team known for delivering exceptional service.
- Guaranteed Satisfaction: We stand behind our work with a guarantee of your satisfaction.
- Proven Track Record: Backed by over 1700 positive reviews, you can trust PDM to deliver reliable and effective backflow prevention solutions.
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Take Action Today:
Contact PDM or call us today at 815-390-7095 to schedule your FREE RPZ estimate in Joliet and surrounding areas.
What is water backflow?
Imagine your clean drinking water flowing backwards – that's backflow. Instead of dirty water draining away, it can reverse direction, potentially contaminating your water supply and forcing a service shutdown.
Any connection between your clean water system and a non-potable water source (like fire sprinklers or irrigation) creates a potential pathway for backflow. This is called a cross-connection. When pressure changes occur within the system, contaminants can enter the clean water supply through these connections.
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A brief history of backflow prevention
- Early Days (1930s): Rudimentary pressure vacuum breakers were developed in Los Angeles, marking the first attempts at backflow prevention.
- Evolution of Double Check Valves (1930s-1950s): Double check valves emerged and gradually evolved into their modern form, becoming the primary backflow prevention device for many years.
- Advancements (Mid-20th Century): The introduction of Reduced Pressure Zone (RPZ) devices and the categorization of different hazard levels significantly improved backflow prevention technology.
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Need a professional?
PDM has a long history of installing and maintaining backflow preventers, including some of the first RPZ systems. Contact our knowledgeable, certified team today or call 815-390-7095 .

Why choose PDM for commercial RPZ backflow inspection
For over 140 years, PDM has been a trusted partner. When you choose PDM for your backflow prevention needs, you can have peace of mind knowing your system is in expert hands.
- Comprehensive Services: We handle all aspects of your Joliet backflow testing project, from scheduling and inspection to repair and maintenance.
- Expert Team: Our dedicated professionals are highly trained and experienced in all types of backflow prevention systems.
- Customized Solutions: We offer cost-effective solutions tailored to your specific needs and budget.
- Reliable & Efficient: We prioritize efficiency and minimize disruption to your business operations.
- Trusted Experience: With over 140 years of experience, you can count on PDM for reliable and dependable service.
Our services include:
- RPZ Testing & Certification:
- Annual testing and certification to comply with local codes
- Repair and replacement of faulty components
- Backflow Prevention Installation:
- Design and installation of new backflow prevention systems
- Upgrades to existing systems to meet current codes
- Maintenance & Repair:
- Routine inspections and maintenance to ensure optimal system performance
- Prompt and reliable repair services for any issues
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Get a free estimate today!
Contact PDM today for a free consultation and estimate. Our team will assess your needs and provide a customized solution that meets your specific requirements. 815-390-7095
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