The greywater system in South Africa costs, fully installed, between R7800 and R11800 ($1000 – $1500). Water Rhapsody has been in business for over 16 years and in that time has installed over 3000 water conservation devices. The grey water systems have proved to be absolutely robust and are used and recommended by architects throughout Southern Africa. Used mainly for residential use, the Water Rhapsody grey water system is equally at home in flats, commercial and industrial use. The cost of the grey water system depends on a number of factors to do with the plumbing and layout of a residential home.