Water demand in India
Water demand in India is for four primary consumptives uses, namely irrigation, power production, domestic and industrial. In the area of water management- it is known that quality deteriorates due to repeated use, no serious attention has been paid to the qualitative aspect of water resources. The total water available in India is about 1900 thousands million , annually, which would be shared between the four primary consumptive uses, as mentioned earlier. However, aquatic ecologists suggests that at no point of time should more than half of the total water available annually for utilization be withdrawn. The total quantity of return water, which becomes waste-water after utilization, is estimated at 286 thousands million. Similarly the volume of industrial liquid waters is about 8 to 16% ad above of the total city waste. The time is not far away that the volume of wastewater discharged by the Indian Industry may be half the volume of domestic sewage generated in the cities. The water of Ganga and Yamuna is the worst victim as both wastewater mixes.