- Human Impacts on Water Supply
- Sewage Disposal pollutes local streams and rivers. In the UK, we add 1,400 million litres of sewage to our rivers.
- Chemical Fertilisers can contaminate groundwater and rivers. The use of fertilisers can increase algae growth
- We produce 400 billions of industrial waste each year. This waste contains heavy metals (Lead and Mercury). Some of the Waste is toxic PCBs
- Although Big Dams are used to improve the water supply, they can also reduce quality