SA Affordable Housing September - October 2016 // Issue: 60 | Page 25
FEATURE
AFFORDABLE PLUMBING FOR ALL
Groenewald’s simple, cheap solution to use greywater
more effectively can be applied across the board, across
all income levels. The volume of greywater wasted in
townships is modest when compared to that consumed by
suburban washing machines that use up to 150ℓ per load,
depending on the machine’s efficiency. A sure-fire way for
suburban households to save money and water is to install
this system and use the waste water generated by washing
machines and dishwashers to flush their toilets, or to wash
their cars, paving and windows.
An adapted system can also be installed in suburban
households, where shower and bathwater collects in an
underground trough and is then pumped up to the cistern.
This adapted system costs about R5 000 to install.
Greywater can even be used to water gardens – in fact, the
residues and soaps in a typical household’s greywater can
provide useful sulphates and nitrates which some experts
say is more beneficial to the garden than clean tap water.
Almost 35% of domestic water is used for gardening in
most suburban homes – using recycled greywater instead
of potable water represents a substantial economic
benefit to the homeowner.
*Photo credit: Johann Venter.
**With additional reporting by Fiona Ingham, editor of
Plumbing Africa magazine.
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