We have a garment factory project that has a Main block and two toilet blocks (separately for Men & Women).
The Main block has cutting & sewing sections only and the occupants of the Main block only will be utilizing the Toilet blocks built next to the main block.
But the Main block and Toilet blocks has no structural connectivity, (but only via a passage at outdoors), hence only Main block is to be registered under Single Building certification.

The major consumption of water for the Project is only in the Toilet blocks.

If the Project with Main block alone be registered under LEED New Construction 2009 (Single Building Certification), how to calculate & meet the water use baseline (Water closets, lavatory fixtures) of the project where majority of water consumption is in the Toilet blocks only which is outside the LEED Boundary.