backflow preventer installation

Back-Flow Preventer Inspection & Installation.

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Meticulous Detail for a Personalized Experience.

Preventing back-flow is a critical component of ensuring an uncontaminated water supply. To maintain compliance, ensure safety, and avoid any future missteps that could affect your business—it’s essential to have a certified back-flow preventer like CDL by your side. Certified under 2 agencies, CDL technicians can help by offering comprehensive inspections of your current prevention device or install a new one for your commercial business.


What We Do.

For decades, CDL has been a trusted resource for commercial plumbing needs across the country. Offering decades of experience, we dedicate ourselves to providing the highest quality customer service. Contact us today for any plumbing services, including and back-flow preventer installation and inspection, your company may require, including:




  • Inspection
  • Design
  • Construction & Building
  • Consulting
  • Back Flow Installation
  • Testing,
  • Maintenance
  • Repair
  • Certification


About CDL

Since 1964, CDL has provided Railroad, Trade and Manufacturing services across the United States. As one of the fastest growing companies in the area, we have expanded to include over 15 specialized services across 3 business segments. Today, we proudly serve 40,000 customers and maintain +3,000 railroad crossings in North America across these segments.

Our success is rooted in our providing value to our customers, as well as our unwavering commitment to our team members. We follow the principles of honesty, excellence, accountability, respect, and teamwork.

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CDL workers performing seasonal HVAC repair and maintenance.


"CDL Plumbing and Heating both came out within hours of calling on a Sunday afternoon during the freezing winter storm even though they were busy and backed up. William with the plumbing department fixed our frozen meter to get our water running again. I cannot thank them enough for responding to our call and coming out when they did!! I had just had surgery and brought a newborn home; they took a lot of stress and worry off me by fixing our no running water issue that day. I will definitely use them again in the future."

Casey Bolton :: HVAC & Plumbing

"Winter storm caused pipes to break. Called in the morning and all was repaired by 1pm. AMAZING SERVICE!!!"

Kerri Beardmore :: Plumbing

"I had CDL come out to put plumbing in my shop building. They came out the day I called and were able to get the job done in record time and they were cheap! I will definitely be using them again."

Kyle Stephenson :: Plumbing

Get started with CDL today!

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