This is the latest of a series of tips extracted from the Green Business Bible e-book:

Use rainwater harvesting for a sustainable source of water but avoid grey-water recycling until technology improves.

Grey water-recycling is the use of water from sinks, showers and baths, although many people use the term erroneously when they mean rainwater harvesting. The main problem with recycling grey-water is the other material (eg soap and faecal matter) that comes with it which can cause odours, safety issues and other problems.