black dog
Free America
As a guy who tracked utilities six days a week for about 10 years that's hogwash.When I had my main water line replaced a bunch of years ago, one of the techs used a dousing rod to locate the pipe, and was more accurate than the guy with a metal finding meter.
Simple to cut apart, meter pit here, water line comes into house here. A line between each is where the water line is.
Some experiments have shown that dowsers may be able to find water or oil when more traditional methods have failed, but only if they have some unconscious knowledge of where the target is. For example, they might be using clues from vegetation, geography, or temperature. When these possibilities are eliminated in controlled experiments, such as by running water through underground pipes, dowsers are unsuccessful.