Water Demand

Question 1

What is water demand?

Answer 1

Water demand refers to the amount of water required by a community, industry or other user over a given period of time.

Question 2

The total quantity of water required by a town depends on:

Answer 2

1. rate of demand
2. population
3. design period

Question 3

The key factors that influence water demand are:

Answer 3

1. Climatic condition
2. size of the city
3. living standards of the people
4. habits and activities
5. industrial and commercial activities
6. quality of water supply
7. pressure in the distribution system
8. system of water supply
9. sanitation systems
10. cost of water and policy of metering

Question 4

The quantity of water required per person per day in litres is:

Answer 4

270 LPCD - 335 LPCD

Question 5

What are the types of water demand?

Answer 5

1. Domestic demand - 135 LPCD
2. Industrial demand - 40 LPCD
3. Demand for public use - 25 LPCD
4. Compensate losses demand - 55 LPCD
5. Fire demand - 15 LPCD

Question 6

Total water demand without full flushing system (LIG) is

Answer 6

270 LPCD

Question 7

Total water demand with full flushing system (HIG) is

Answer 7

335 LPCD

Question 8

What does domestic water demand include?

Answer 8

It includes water required for cooking, washing, drinking etc.

Question 9

What does it mainly depend on?

Answer 9

1. habits
2. social status
3. climatic condition
4. custom of people

Question 10

Domestic water demand for each activity:

Answer 10

1. Bathing - 55 lpcd
2. Washing - 40 lpcd
3. Flushing of latrines - 30 lpcd
4. Cooking - 5 lpcd
5. Drinking - 5 lpcd