If manufacturer documentation is unavailable and the flow/fixture rate is unknown is it allowed to physically measure and time water consumption rates for at least a 20% of the fixtures of each fix

Can the water meter installed to measure the monthly and total building level water (WEPR2) be used to determine the anual Option 2 metered water use baseline (WEPR1 option2) if there is no more

We are in the process of certifying a Core and Shell building which does not have a previous LEED certification.

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?