In an earlier article I wrote:
Kirsty writes:
We have installed 4 tanks for the garden and a tank for excess water, to
flush the toilet. At present the cost of installing these tanks isn't
'worth' the money, as water in Australia is so cheap.

The available water might prove its worth if you are in bushfire area.

Making a good reason for having a gravity-fed tap in the tank in addition
to the popular electric pressure pump. In the event of a bushfire, loss
of electricity could make the water inaccessible unless you have a tap
already fitted to the tank.
--
John Savage (news address invalid; keep news replies in newsgroup)