The Plumbing and Drainage Institute is the premier source of information for plumbing and drainage products such as: floor drains, roof drains, sanitary floor drains, cleanouts, water hammer arresters, backwater valves, grease interceptors, fixture supports, and other drainage specialties with specific expertise in Hydro-Mechanical Grease Interceptors and Water Hammer Arresters. 

Our Standards, Publications and Training Seminars are a valuable resource for plumbing and drainage professionals, architects, contractors, and public officials.