Associations Pipes and Fittings Site Construction Materials and Supplies

National organization for clean water and water distribution systems. Develops standards for water pipes and hosts a supplier directory of pipe manufacturers for all materials.

• American Water Works Association (AWWA) - National organization for clean water and water distribution systems. Develops site construction standards for water pipes and hosts a supplier directory of site construction pipe manufacturers for all materials.
• DIPRA - Ductile Iron Pipe Research Association - Manufacturers association supported by the Ductile Iron pressure pipes and fittings pipe manufacturers in North America.

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