Useful Links

• Thrust Restraint Design for Ductile Iron Pipe
  This program is based on the equations and procedures found in the DIPRA brochure Design of Ductile Iron Pipe on Supports.
• NSF/ANSI 61 Drinking Water System Components
  NSF International provides testing and certification to NSF/ANSI Standard 61: Drinking Water System Components — Health Effects
• American Water Works Association
  AWWA is the resource for current and vital information for the water profession.  AWWA provides a constant flow of reliable information on technology, trends, and news through its periodicals, web site, and media outreach.