ONTARIO, CALIFORNIA — Dipper wells are not controversial. Shower valves and tub spout shower diverters are. In their final act, members of the International Association of Plumbing & Mechanical Officials Green Technical Committee worked through public comments on the 2015 edition of the Green Plumbing & Mechanical Code supplement that will be published later this year. The GPMS is a water- and energy-saving overlay to both the Uniform Plumbing Code and Uniform Mechanical Code.
Showering can be controversial, but ice cream scooping is not
The debate over shower valves and tub spout shower diverters was over the basic philosophy of what is appropriate for the GPMS. Some argued that the manufacturers would ignore the provision if it’s not in the base UPC code or in the product standard. Committee members also vigorously debated whether tub spout shower diverters should have zero leakage.