Influenced by long periods of drought and having learnt to appreciate how important water is, many Australian gardeners are now using Greywater to water their gardens. Grey water is used water from bathrooms, laundries and kitchens, excluding that from toilets bidets and urinals which are known as black water. Grey water use has the potential to save gardeners many thousands of litres of water but it does have limitations.
One of the limitations is the health concerns with greywater use, in particular the possibility of harmful bacteria. For this reason it is recommended that grey water is applied to gardens through subsurface irrigation, and that it should not be applied to vegetables or fruits, especially those which will be eaten raw.
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