Lecture (3): Estimation of water consumption

Lecture (3): Estimation of water consumption Lecture (3): Lecture objectives: By the end of this lecture students should be able to: To estimate water consumption. To know the Factors that can affect per capita water consumption.

Lecture (3): Estimation water consumption Water use varies considerably around the world, depending on availability of water and degree of industrialization. However, use can be classified into four broad categories: domestic use, agricultural use, industrial use, and in-stream use.

Domestic water Domestic water is water used for indoor and outdoor household purposes— all the things you do at home: drinking, preparing food, bathing, washing clothes and others.

Prediction of Future Water Resources: It is expected that utilized surface water resources will increase to about 2000 MCM by the 2025. This will be mainly due to the construction of more dams throughout the country.

Groundwater resources Groundwater resources are expected to increase due to developments taking place in the areas where they are available. The amounts withdrawn up to the year 2025 will highly depend on different scenarios future development especially in the agricultural sector.

Desalinized seawater Desalinized seawater is expected to increase at about 3% annually. This estimate was based on (increases desalinization projects + future development plans). This resource will be about 1750 MCM by the year 2025 and will exclusively be used for domestic purposes.

Factors that can affect per capita water include: Rainfall, temperature and evaporation rates. Population growth Population density Socio-economic measures such as lot size and income Water prices