How can I verify the location of underground PE pipes?

The first reference source is the Construction Records held by the pipeline operator.  These records should contain details of pipe location, depth of burial, location of other underground plant and any other relevant information.

The information shown on the construction records should be verified on site. Survey of appurtenances at the surface, such as chamber covers, as well as limited potholing to verify depth,  should be undertaken if considered necessary.

Remote pipe detection from the surface can also be used. Several methods are available that can buried PE pipes from the surface. However the electromagnetic methods used to detect buried cables and metallic pipes are not suitable for detecting PE pipes.