Summary

In Study Session 11, you have learned that:

1. There are several ways of minimising the use of drinking water. In doing so, we save not only water but also energy and chemical usage.
2. Rainwater can be collected and used in a variety of ways, after the first flush is discarded.
3. Rainwater can be used for drinking if it is filtered and disinfected.
4. Treated sewage can be an important resource for use in irrigation.
5. In Ethiopia, waste stabilisation ponds offer an economical way of treating sewage for reuse.
6. Waste stabilisation ponds can be used to farm fish and ducks, for food.
7. Safety measures are needed when working with treated effluent.