Water substances are drawn specifically from rivers, lakes, and groundwater. The hydrologic or water cycle renews water substances through transferring water from the oceans, as freshwater, to land. Average home water intake in Indian city=135lpcd.
Table of Contents
Different Types Of Demand
Domestic Water Demand:-
Industrial Water Demand:-
| Auto Mobile | 40KL/Vehicle |
| Paper | (200-400)KL/torn |
| Steel | (200-250)KL/torune |
| Sugar | (1-2)KL/torue |
| School | (45-130)lpcd |
| Hotels | 180lpcd |
Fire Demand:-
Its depend on the population of city.
(2) Freeman’s formula 
(3) Kuichling’s formula 
(4) Buston’s formula 
where Q= quantity of water(in liter/min)
P= Population of Town (in thousands)
For Average Indian City Cumulative Demand:-
| Domestic | 200 lpcd |
| Industary | 50 lpcd |
| Commerical Use | 20 lpcd |
| Public Use | 10 lpcd |
| Wast Including | 55 lpcd |
| TOTAL | 335 lpcd |
