WHY IS WATER IMPORTANT TO THE HEALTH OF THE PLANET

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Presentation transcript:

WHY IS WATER IMPORTANT TO THE HEALTH OF THE PLANET WATER WORLD WHY IS WATER IMPORTANT TO THE HEALTH OF THE PLANET

THE HYDROLOGICAL CYCLE Flows…stores (regulated…natural and man made) Affected by rock type ..permeable impermeable, porous or non-porous, AQUIFERS

UNRELIABLE Seasonal changes Longer natural cycles Climate change Case Study…Australia World changes in supplies…increased demand…MEDC’s or LEDC’s

SUSTAINABLE Problems with water quality …rivers, aquifers, etc Pollutions …eg Human sewage, toxic chemicals, plastic bags, heat, agricultural waste. Disrupted supplies Changing flows/stores (groundwater and extraction) Case study = coca ~cola in Plachimada = the Colorado River

Small-scale management Intermediate technology = lined wells = handpumps = rain barrels Case study= AFRIDEV HANDPUMP IN TANZANIA

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