A single inch of rain on a 1000 square foot roof yields 623
gallons of water. That’s a lot! Installing a rainwater tank
means you can keep all that water around until you need it,
thereby reducing your use of mains water, saving you money, and
helping the environment. If you receive enough rain, it might
even be possible to make yourself independent from the public
water supply. The environmental benefits of installing a
rainwater tank in certain arid regions of the country are so
great that the local authorities strongly encourage and may even
require them. In Victoria, using a water storage tanks to run
your flush toilets is good for an additional star to help you
reach the required five stars in your house energy rating for
new construction. Even when they’re not required, rainwater
tanks make a great source of water for gardening, washing cars,
flushing toilets, and other situations where purity is not
critical. Why waste precious purified water just to wash your
car? It is even possible to use rainwater