It is possible on an average domestic block with an average
roof to install rainwater tanks that will give you 100 % domestic
supply if your tank is big enough and your water use highly
efficient. At least 80,000 litres is ideal. With longer dry
spells and then dumping rain events more common, large capacity
is essential. Install a first flush settling pit or device
before the tank. After the pump install a pressure tank, grit
filter, carbon filter and UV steriliser unit. With this setup
your water will be cleaner and fresher than any town water
and free from bacteria and viruses.
Llewellyn Pritchard, Director
of Conscious Homes is an ESD consultant, registered Architect,
a registered Builder (Domestic Unlimited and Commercial Unlimited),
an HIA Greensmart Builder and writer. Conscious Homes won the 2006
National
HIA Greensmart Resource Efficiency Housing Award.
