The diagram depicts the process of the utilisation of rainwater.

Overall, there are two main ways of reusing rainwater: using it directly and consuming treated water.

As regards the first method, rain falls into rainwater tank adjacent to the house, or rainwater retained in the leaves of nearby trees drips into this tank. Then water is used without potentiall harmful substances being removed. The other method, using water treatment plant, starts with rainwater from the dam flowing to the plant through a pipe system. Here, water is purified so that after treated water is delivered to hosueholds, it becomes potable.

Concerning the recycling of household wastewater, it goes through the purification procedure in a wastewater treatment plant and then stored in a large tank before being ready for domestic use. If the amount of treated
water is excessive, it will be pushed to the river via drains. That method, however, is also employed for the treatment of stormwater.

The diagram depicts the process of the utilisation of rainwater.


Better:

The drawing illustrates the domestic use and recycling of rainwater.


Overall, there are two main ways of utilizing reusing rainwater: using it directly (That is not reusing) . and consuming treated water.


Overall, there are three ways that water is provided to households: they can collect rain directly, obtain water from a fresh water treatment plant, or get recycled water from a wastewater treatment plant. Unused water drains into a nearby river.


As regards the first method, rain falls into rainwater tank adjacent to the house, or rainwater retained in the leaves of nearby trees drips into this tank. Then water is used without potentiall (wrong form) harmful substances being removed. The other method, using water treatment plants, starts with rainwater from a reservoir the dam flowing to the plant through a pipe system. Here, water is purified so that after treated water is delivered (Incorrect. The water is potable when it leaves the plant.) to hosueholds, it becomes potable.

Concerning the recycling of household wastewater, it goes through a the purification procedure in a wastewater treatment plant and then is stored in a large tank before being ready for domestic use. If the amount of treated
water is excessive, it will be allowed to flow into pushed to the river via drains. Rain that is not collected flows into stormwater drains into the river. That method, however, is also employed for the treatment of stormwater.

Thank you very much.

I often have difficulty tackling this type of diagram because first, I sometimes do not completely grasp the diagram and second, I find it difficult to find the appropriate words. Emotion: sad(

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Nhật Bìnhsometimes do not completely grasp the diagram

It is not a typical Task 1 test - too much like a cartoon than an academic or professional drawing.

The real tests have much clearer process diagrams.

Look at this one:

https://ieltsliz.com/ielts-diagram/