The diagram below shows how rainwater is collected and converted to drinking water in an Australian town. Write a report for a university lecturer describing the picture below. Write at least 150 words.

The diagram shows the way in which rainwater is gathered and transformed into drinking

water

in an Australian town.

Overall

, the process consists of seven stages, beginning with a collection of

water

from all houses and ending up with distributing the purified

water

to all the houses in Australian towns. First of all, the rain which falls on the rooftop is collected by the gutter and

then

runs down the pipe at the side of the house into the drain at the bottom. Each house collects rainwater in

this

way and after that, the

water

is passed through drains to a

water

filter, where the

water

is first filtered to remove all the impurities. The filtered

water

is

then

transferred to a huge rectangular shaped storage tank. In the next stage, the

water

from storage is sent by tubes to a

water

treatment plant, in which chemicals are added to treat the

water

.

Subsequently

, with the chemical treatment the

water

becomes germ-free.

Finally

, the

water

is ready for drinking and it is sent to all the houses through pipes.