Welcome to Williams Testing

The Proven Solution for Flexible Pipe Deflection

For over 30 years, Williams Testing has provided fast, cost-effective, and permanent solutions to pipe deflection problems in sewer systems and landfill infrastructure. Whether you’re a contractor facing a failed mandrel test or a landfill operator dealing with a deflected leachate riser, we can fix it—without excavation.

Our patented solution, The Original Williams℠ Rerounder™ System, has helped clients across the U.S. and overseas avoid costly delays, pass inspections, and stay compliant.

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Dick Williams, Inventor of The Original Williams Rerounder System

The Original Williams℠ Rerounder™ System Invented by a Contractor. Proven in the Field.

More than 25 years ago, he invented a system that could not only reround deflected sections of pipe, but also improve compaction of the bedding material around the pipe, permanently preventing further deflection. 

The system he developed uses vibration to compact bedding and restore the pipe’s round shape—from the inside. It’s fast, safe, and completely eliminates deflection in pipes up to 60 inches in diameter.

  • No trenching
  • No excavation
  • Permanent solution
See Where It Started
animation of rerounder working

Don’t Just Take Our Word for It Trusted Nationwide for Over 30 Years

From Florida to California, contractors and landfill operators rely on Williams Testing to deliver permanent solutions. Our system has saved millions in avoided excavation and pipe replacement.

"If you have pipe underneath pavement, road crossings, or railroads, digging up really isn't an option. The Rerounder redistributes the stone around the pipe and brings it back to it original shape."
Steve Kayatin, P.E.Sanitary Engineer
"When we call, we can get service within a few days. It's definitely peace of mind for us, because time is money."
Bill DegenSewer Contractor
"It would definitely be more cost effective for the contractor to use The Original Williams Rerounder System versus excavation and reinstalling the pipe."
Jim Myers, P.E., P.S.Consulting Engineer

Want to see it working?

We’ve got video demonstrations, expert interviews, and testing simulations that show exactly how The Original Williams℠ Rerounder™ System gets results.

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Case Studies

Video Resources

News & Articles

What Is Pipe Deflection and Why It Matters

Plastic pipes like PVC and HDPE are prone to deflection when bedding isn’t properly compacted.

  • In sewers, this can delay projects and drive up costs.
  • In landfills, it can lead to EPA violations, groundwater contamination, or even forced closure.
That’s where we come in.
See Our Solutions

Sewer Pipe Deflection? We’ve Got You Covered.

SEWER REROUNDING

PVC sewer pipes often fail mandrel tests due to poor compaction.

Our system restores the pipe to its original shape and improves bedding compaction, allowing you to pass inspection and move forward—usually in just one day.

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Landfill Riser or Gas Well Problem? We Can Fix It.

LANDFILL REROUNDING

When a leachate well pipe deflects, pumps get trapped and excavation can become a multi-million-dollar job.

Our system clears the well, restores the pipe, and preserves the original depth—without disturbing the liner or surrounding waste.

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Let's Talk

Have a project you’d like us to quote or just need more information?

We’re here to help—we invented the solution.

Contact Us Today