When introducing the design flow rate values in the indoor water calculator for option 1 calculated water use, we should use the flow rate fixtures values associated to the actual facility pressur

For multifamily buildings where the residents are responsible for purchasing and installing fixtures, for Option 1 do I need to survey every fixture in every apartment?

If we had submeters installed for more then 80% fixtures in the building but the building is unoccupied during the perfomance period we must use (as the reference guide seems to state) the optio

I am working on WE prerequisite for Indoor water use reduction and we decided to go with the 1st option.

When inputing into the indoor water use reduction calculator, do we have to input each fixture individually?

it is required to comply with the table 1 for each fixture as it seems to state in the establisment period for option 1 calculated water use, or it is enough to comply with the baseline 120% o 150%

There is a bug in the Indoor water use Reduction Calculator when there is no urinals, the male water closet uses per day are set to 4 instead of 3 uses per day. How can we solve this?