About Us

About Us

What is a cross bore and why is it important?

Tuesday, September 12, 2017

We are taking aim at a common issue facing utility companies and municipalities – especially those with underground infrastructure.

In recent years there has been a rise in the use of “trenchless technology,” where utility lines are installed underground without the need to dig large holes or long trenches.

While this technology significantly reduces unsightly construction, it increases the possibility that one utility can be installed through another. 

This condition is known as a "cross bore." (Watch our video about cross bores.)

On its own, the actual cross bore isn’t a problem. But over time, the sewer line can become blocked with sediment and waste. When the customer or a plumber tries to clear the sewer line with a mechanical tool, the utility line could be punctured. If is a gas line, it could create a dangerous situation. 

We are taking a multi-faceted approach to remediate and prevent the issue of cross bores. 

  1. We want you, or the plumber you hire, to call 811 prior to any work on clogs where a cross bore might exist. When in doubt, we encourage you to call Columbia Gas of Ohio. You should refrain from using a mechanical cutting or clearing tool until the source of the clog is identified. 
  2. We’ve changed our procedures to locate all utilities, including sewer lines and laterals, prior to using trenchless technologies to install new gas lines.
  3. Preventing cross bores and locating those that might already exist is important to us. Not only are we educating customers and plumbers about cross bores, we’re also working with municipalities and other utility companies to remediate those that were created in the past.

To learn more, see our Sewer Line Safety page.