WATER SCARCITY

PRESENTED BY

CHAITRA.B.S2nd Year M.Sc

Shri devi P.G Centre

OVERVIEW INTRODUCTION WHAT IS WATER SCARCITY CAUSES FOR WATER SCARCITY 10 FACTS ABOUT WATER SCARCITY NEED TO CONSERVE WATER RESOURCE SOLUTIONS REFERENCES.

INTRODUCTION WATER is an essential resource for life

and good health. All living things require water for survival. Water possesses unique physical and

chemical properties . At global scale about 71% of earth’s

surface is covered with water. Total volume of water in hydrosphere is

estimated to be 1.4 billion of which 97% is ocean water and rest 3% is avaliable as fresh water.

Conti……

Water available for human exploitation is 9000Cum3 per year.

Water scarcity will cause annual global losses of 385 millon tons of food production.

WHAT IS WATER SCARCITY The shortage of water as compared to its demand is known as water scarcity.

http://www.thespiritans.org http://www.apec-vc.org.cn

CAUSES FOR WATER SCARCITY Dry climate. Drought. Desiccation. Water stress.

Causes of water scarcity

Quantitative aspects 1.Variation in seasonal. 2.Over exploitation of water

resources. 3. Excessive use of water. 4. Unequal access to water among

different social groups.

Qualitative aspects

1. Bad quality of water. 2. Population growth. 3. Commercialisation of agriculture. 4. Industrialisation. 5. Urbanisation.

FACTS OF WATER SCARCITY

FACT 1

Water scarcity occurs even in areas where there is plenty of rainfall or freshwater. How water is conserved, used and distributed in communities, and the quality of the water available can determine if there is enough to meet the demands of households, farms, industry and the environment.

FACT 2

http://www.nri.org

Water scarcity affects one in three people on every continent of the globe. The situation is getting worse as needs for water rise along with population growth, urbanization and increases in household and industrial uses.

FACT 3

http://www.iucn.org

Almost one fifth of the world's population (about 1.2 billion people) live in areas where the water is physically scarce. One quarter of the global population also live in developing countries that face water shortages due to a lack of infrastructure to fetch water from rivers and aquifers.

FACT 4

Water scarcity forces people to rely on unsafe sources of drinking water. It also means they cannot bathe or clean their clothes or homes properly.

FACT 5

http://www.droitsenfant.com

www.savesight.org

Poor water quality can increase the risk of such diarrhoeal diseases as cholera, typhoid fever and dysentery, and other water-borne infections. Water scarcity can lead to diseases such as trachoma (an eye infection that can lead to blindness), plague .

FACT 6 Water scarcity

encourages people to store water in their homes. This can increase the risk of household water contamination and provide breeding grounds for mosquitoes - which are carriers of dengue fever, malaria and other diseases.

FACT 7 Water scarcity

underscores the need for better water management. Good water management also reduces breeding sites for such insects as mosquitoes that can transmit diseasees and prevents the spread of water-borne infections such as a severe illness.

FACT 8

A lack of water has driven up the use of wastewater for agricultural production in poor urban and rural communities. More than 10% of people worldwide consume foods irrigated by wastewater that can contain chemicals or disease-causing organisms.

FACT 9 Millennium

Development Goal number 7, target 10 aims to halve, by 2015, the proportion of people without sustainable access to safe drinking water and basic sanitation. Water scarcity could threaten progress to reach this target.

FACT 10

Water is an essential resource to sustain life. As governments and community organizations make it a priority to deliver adequate supplies of quality water to people, individuals can help by learning how to conserve and protect the resource in their daily lives.

IN INDIA WATER IS MORE VALUABLE THAN GOLD

water is not a major problem for some countries of the world .People

pay for clean non polluted water.

NEEDS TO CONSERVE WATER RESOURCES

Water is necessary for life on earth. It is believed that life first originated in water before it invaded land.

Cultivation of crops depends on water. As India is a agricultural country, so availability of water is must.

Water is also essential for drinking and other domestic works.

It is also used in industries.

AUGMENT SUPPLY Rain water harvesting. Roof harvesting. Soil moisture management. Run off farming. Construct a Small dams.

SOLUTIONS

Awarness has to be created amongst people regarding the importance of the available resources.

Use the sea water to irrigate agricultural lands, after taking out the

salt. Save the rain water. Build rain water harvesting in every

house.

REFERENCES ENVIRONMENTAL BIOTECHNOLOGY BY

C.S.K MISHRA. BASICS CONCEPTS OF ENVIRONMENTAL

BIOTECHNOLOGY BY INDU SHEKHAR . WWW.GOOGLE.COM.

Man made drought and the looming water crisis

THANK YOU