The International Association of Plumbing and Mechanical Officials convened the Water Efficiency and Sanitation Standard (WE•Stand) Technical Committee meeting so it could resolve public comments as a major step in the procedure to develop WE•Stand as an American National Standard.

The standard is expected to be published later this year and it will be the U.S.’s only American National Standard devoted just to plumbing and water efficiency.

The public comments on the development of WE•Stand covered issues such as:

  • Improved provisions for indoor water efficiency and landscape irrigation;

  • Appropriate permitting and cross-connection prevention requirements for alternate water systems;

  • Revisions to water heating design provisions allowing new fitting types that help to mitigate biofilm growth by providing improved scouring action in potable water pipes;

  • Inclusion of a revised, statistically based pipe sizing method for residential applications in the appendices that will support the use of a water demand calculator to assist plumbing system designers to more accurately size systems to be consistent with the lower flow rates and consumption values from water efficient plumbing fixtures and appliances.

“I continue to be impressed with the knowledge and passion of the WE•Stand TC members throughout this deliberative process,” said Dan Cole, technical services manager and primary staff for WE•Stand. “No other committee on water efficiency has the breadth of experience and vision that this TC embodies. We are grateful for its commitment to make WE•Stand the most advanced water efficiency standard in the world.”

The final TC ballot to review the public comments on the 2017 WE•Stand concludes May 15.