We work on an pharma project and we want to resuse MAU condensate, on-site treated waste water and rain water to supply toilets, irrigation and Cooling towers.

Regulated water consumption is around 10cubm/d, cooling towers will consume 200cubm/d of reused water.

The requirement for the process water saving is to have a saving bigger than 10% of the regulated water usage.

I feel a little strange about this calculation.