Hi all,
our project does sub-meter water for irrigation. However, the facility manager uses this water also for watering greenery which is outside of LEED boundary (greenery owned by the city) thus the water consumption is much higher than it would be according OPTION 2 (I would use only greenery on the project site for the calculation).
We want to install a water tank to retain rain water. Is it possible to go for OPTION 2 instead of OPTION 1 even though we are sub-metering water for irrigation?

Thank you for any suggestions.