I am working on a 5 story hotel in San Jose, California. I'm trying to finalize the Indoor Water Use Reduction Calculator. The water closets (4 types) have identical gpf rates, so I've left them at the default setting of 50% of occupants using each. Likewise, the residential showerheads (3 types) have identical gpm rates, so I've left them at the default setting of 100% of occupants using each.
However, the populations of Private (residential) lavatory faucets, Public lavatory (restroom) faucets, and Kitchen faucets are all different. Do I adjust the percentages based populations of each, or is there a different method. I doubt I leave them all at 100%. Your help is appreciated.