Just when you thought you figured out the new commercial LEED faucet baseline (.5gpm or .25gallons per cycle) ...

The State of California adopts the CalGreen Building Code effective January 2011 requiring the maximum flow rate for non-residential faucets to be .4 gpm or .20 gpc.

In addition, "When single shower fixtures are served by more than one showerhead, the combined flow rate of all the showerheads shall not exceed the maximum flow rates specified in the 20 percent reduction column contained in Table 5.303.2.3 or the shower shall be designed to only allow one showerhead to be in operation at a time."

http://www.bsc.ca.gov/default.htm
p31

How does this affect your current design?