My project is a campus project, consisting of 4 individual buildings. To fulfill this credit, can I install 1 meter to monitor sanitaryware for 4 buildings together as a whole? or I have to split into 4 separate meters for each building.

Regarding water for landscaping, can I have just 1 spot of water supply with 1 meter for irrigation for the whole site, or do I have to split into 4 water supply locations with 4 separate meters for each building? Thanks for your advice.