Correct Answer - Option 4 : Festivals celebrated
Although all the factors affect the given per capita demand of water supply, the festival celebrates demand is a minor factor that has a minimum effect on per capita demand.
Factors affecting per capita demand:
1. Size of the city: Per capita demand for big cities is generally large as compared to that for smaller towns as big cities have sewered houses.
2. Presence of industries.
3. Climatic conditions.
4. Habits of people and their economic status.
5. Quality of water: If water is aesthetically medically safe, the consumption will increase as people will not resort to private wells, etc.
6. Pressure in the distribution system.
7. Efficiency of waterworks administration: Leaks in water mains and services; and unauthorized use of water can be kept to a minimum by surveys.
8. Cost of water.
9. Policy of metering and charging method: Water tax is charged in two different ways: on the basis of meter reading and on the basis of certain fixed monthly rate.
10. Commercial activities of the region.