Correct Answer - Option 2 : 135 litres
Concept:
As per IS: 1172-1993, the value of water supply given as 150 to 200 litres per head per day under normal conditions, may be reduced to 135 litres per head per day for houses of lower income group and economically weaker section depending upon the prevailing conditions in small cities and towns.
Institutional and Commercial Water Demand:
The individual requirements would be as follows:
(i) Schools/Colleges: 45 to 135 lpcd
(ii) Offices: 45 lpcd
(iii) Restaurants: 70 lpcd
(iv) Cinema and theatre: 15 lpcd
(v) Hotels: 180 lpcd
(vi) Hospitals: 340 lpcd (when is less than 100) & 450 (beds exceeding 100).
Industrial Water Demand:
Water Demand of certain important industries (As per GOI MANUAL):
|
Name of Industry
|
Unit of Production
|
Approximate quantity of water required per unit of production
|
|
Automobiles
|
Vehicle
|
40
|
|
Fertilizers
|
Tonne
|
80 – 200
|
|
Leather
|
Tonne
(or 100 kg)
|
40
4
|
|
Paper
|
Tonne
|
200 – 400
|
|
Petroleum Refinery
|
Tonne (crude)
|
1 – 2
|
