
Carrboro Plumbing owners Emily and Chris Kreutzer stand in front of one of their company service vehicles at their company headquarters in Carrboro, North Carolina.
About five years ago, plumber Chris Kreutzer got a call from a restaurant owner with a pressing problem: a waterline leak, as indicated by an unusually high water bill.
The co-owner of Carrboro Plumbing in Carrboro, North Carolina, came up with a novel approach to locating the...