WEp1 for Multiple Building

I´m working on a project that is a campus with 2 warehouses, an administrative building, a large dining room, a little auditorium and a changing room. The buildings that are pursuing LEED Certification for Core & Shell are only the warehouses, the administrative room and the large dining room. Because the other two building don´t have the MPRs. My question is, the employees of the warehouses will use the changing room facilities, but the changing room will not pursue certification. So do I have to consider the water demand from this building? Bucause if we are a Multiple Building situation, this credit cannot be pursued as a campus credit, each LEED project must pursue the prerequisite individually.