Hi Kaustubh, I hope this ...

Hi Kaustubh, I hope this helps..

Saying you are estimating your organizations water footprint would imply that you are estimating the consumption of water across your supply chain. This is a very difficult thing to do and does not look like what you are doing from the other information you are looking for. Maybe reconsider what you are doing..

Benchmarks like consumption per person & cooling in IT can be misleading and also close peoples minds to what may be possible. A lot of "quoted" data is for building design purposes & hence conservative. Then there are technical issues which drive consumption which are difficult to normalize for different circumstances. For example the water consumed for cooling would be a function of the demand you need to satisfy (the heat you need to remove), the climatic conditions, the water quality, condition of the equipment, the behavior of people etc.

Assuming you are simply "looking for ways to ​reduce the ​water  consumption ​at organization ​level" I would suggest a different approach. Measure what you consume and put this into perspective and directly meaningful to your employees. For example (and apologies for another possibly bad assumption L&T means Larson & Toubro in India) Per employee how much water do you consume compared to the average inhabitant of India, or how many they may be depriving of water. Then engage them in how they can individually make a difference but be ready with "levers" (things they can do & influence) and a score board of how they are doing.