ALN No. 56: November-December 2004
Water efficiency I: Cities
Figure 4, right, shows the 50-liter bucket that forms the subterranean sump into which greywater from the household's bath, shower, kitchen sink, and washing machine is drained. As the sump fills, a float switch automatically turns on the submersible pump that is visible in this picture. The greywater is pumped from the sump... |
... down a garden hose, through which it is sprayed onto the garden (Figure 5, left). This system has the advantages of being easy to run and easy to move around the garden to where water is most needed. |