The GPMCS is the first and only one publication that spells out the best sustainable plumbing and mechanical building practices in simple, straightforward code language.
The Green Supplement is not a "greener" version of the Uniform Codes, but rather a separate document establishing requirements for green building and water efficiency applicable to plumbing and mechanical systems.
The green supplement covers:
Water efficiency and conservation including:
High efficiency fixtures, fixture fittings, and appliances
High efficiency plumbing fittings, fixtures and appliances
Water softening equipment
Cooling towers and Evaporative cooler
Alternate water Source Usage, including gray water, rainwater, and recycled water
Water heating system, including equipment efficiency, insulation, recirculation, design and system controls
Energy efficiency for HVAC systems based on ASHRAE 90.1 and 90.2
Enhanced environmental quality for buildings based on ASHRAE 62.1 and 62.2