Organization promoting controlled outlet land drainage as an environmental best management practice, improving water quality by reducing nutrient runoff through plastic field tile drainage.

Organization of manufacturers, suppliers, and allied businesses dedicated to providing accurate information about corrugated HDPE drain pipe addressing key issues such as strength and structural integrity, service life and long term performance, proper installation and material composition, among others. Includes a members roster.

Trade association for companies in the United States and Canada, with information about products, standards, and codes. Includes membership roster, organized by company type.

National trade association working to increase acceptance of PVC and polyolefin pipeline systems. Provides technical information. Includes membership roster.

Trade association representing the plastics piping industry. Contains technical information about the use of plastic pipe for water, drainage, fuel, gas, conduits, plumbing, and heating. Includes membership roster.

North American association of polyvinyl chloride (PVC) pipe manufacturers. Contains technical and application information about PVC pipe. Has a members roster.