Understanding water quality

# Learning outcomes

After studying this course, you should be able to:

- describe the chemical compositions of natural waters, and explain how and why these compositions vary
- describe the main sources of water pollution, the main types of pollutant and how each type may be controlled
- outline the extent of water pollution in the UK and in selected global locations
- identify the criteria for drinking water acceptability in the EU, and outline the processes used to treat water for a public water supply
- outline how sewage may be treated before discharge to the environment.

OpenLearn - Understanding water quality
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