The diagram below shows how rain water is collected and then treated to be used as drinking water in an Australian town. Summarise the information by selecting and reporting the main features and make comparisons where relevant. You should write at least 150 words.

The diagram demonstrates how rainwater is gathered and prepared for use as drinking

water

in a town in Australia and the various stages involved in making it suitable for drinking.

Overall

,

this

process involves three main stages:

water

filtration, storage, and

treatment

. In the first step, rainwater that falls down on the roof of a house is directed through a pipe

that is

at the side of the house.

Then

it runs down the drain fixed at the bottom of the house.

The next step is

filtering to remove impurities that contaminate

water

collected from homes. After completing

this

stage, the

water

flows to the storage tank. That filtered

water

then

goes to the

treatment

tank. Prior to being distributed to houses, the

water

has been treated with chemicals.

This

chemical

treatment

is completed at the

treatment

tank. Chemicals are added in order to sterilize the

water

.

As a result

of

this

purification method,

water

is ready for human consumption.

Finally

, the processed

water

is supplied to the houses through pipelines for daily domestic purposes.