Water recycling
Wiser flushing with grey or
“gently used” water
Saves lots of
high quality water
By Carol Posthumus
“Short term (less than one year) irrigation with bath and laundry greywater has proven to be
generally beneficial to edible and non-edible plant growth.”
Rainwater Harvesting sieve and tanks
F
lushing of toilets uses a lot of expensively
treated drinking water. Toilet flushing
reportedly uses between 30-50% of a
household’s total drinking water supply.
The WRC reports that in order to help address this situation and
seek some solutions, they funded a study on dual greywater and
drinking water systems for high-density urban buildings.
Greywater, says the WRC, from showers, baths, hand basins,
laundry tubs and washing machines can provide a solution to
our water scarcity challenges. Indeed a joint pilot study – by
the Universities of the Witwatersrand (WITS), Johannesburg (UJ)
and Cape Town (UCT) – funded by the WRC, is sho