North American Society for Trenchless Technology (NASTT)

Western Chapter of NASTT

Utility Engineering and Surveying Institute (UESI) of the
American Society of Civil Engineers (ASCE)

Ductile Iron Pipe Research Association (DIPRA)

Plastics Pipe Institute

Alliance for PE Pipe

National Clay Pipe Institute

American Concrete Pipe Association

California-Nevada Section of the American Water Works Association (AWWA)

American Public Works Association (APWA)

PVC Pipe Association

EPA – Safe Drinking Water Act

American Society for Testing and Materials (ASTM)