How human activity can make water stress worse- pollution, over extraction and salt water incursion
- Created by: rebeccahankinson
- Created on: 01-04-15 12:21
View mindmap
- How human activity can make water stress worse- pollution, over extraction and salt water incursion
- Sewage disposal in developing countries is expected to cause 135 million deaths by 2020.
- In the UK we add 1,400 million liters of sewage to our rivers daily although most of it has been treated.
- Chemical fertilisers contaminate groundwater as well as river and water supplies.
- These add nutrients to the water leading to an increase in the growth of algae downstream
- Industrial waste- every year the world generate 400 billion tonnes of industrial waste which is pumped untreated into rivers, seas ect
- Dams- trap sediment in reservoirs which reduces floodplain fertility and the flow of nutrient for rivers into sea.
- Abstraction- removing water from rivers and groundwater sources can cause issues that in some arid areas rainfall can never recharge
- these underground stores and the removal of freshwater from the aquifers in coastal locations can lead to salt water incursion
- Sewage disposal in developing countries is expected to cause 135 million deaths by 2020.
Comments
No comments have yet been made