7SC- Water For Life - Mixtures, Solutions & Suspensions: Task

Task:

Develop a filter system to be used by a population in a third world country.

Things to note:

• The water is taken from a local well
• The water will need to be drinkable
• The water in the well contains the following:
  • Coarse sand
  • Fine sand
  • Plant debris
  • Microbes (contamination)
  • Soluble substances such as salt

Extension of task:

How can this filter be improved to make it reusable (used a number of times)