This IELTS diagram appeared a number of times in IELTS Writing Task 1 (academic). It is typical of many diagrams that are used by IELTS. Diagrams are about presenting an overview of main stages and then systematically presenting the details of the whole diagram. The model answer below is estimated at band score 9. Note that diagrams are also known as processes.
Note that you require an overview for an IELTS diagram. In fact, all IELTS Writing Task 1 (Academic) require an overview. Pay attention to the summary of key stages in the process in that statement.
IELTS Rainwater Diagram
Reported Diagram from IELTS candidates. This diagram has been recycled for a number of years and will most likely continue to appear. Make sure you prepare it carefully.

IELTS Diagram Model Answer
This is an exercise to learn sequencing, linking and signposting for IELTS diagrams.
Don’t rush – your aim is to learn, analyse and develop.
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FULL MODEL ANSWER FOR IELTS RAINWATER DIAGRAM
Have you completed the exercise above? Did you get it all right? Try again if you didn’t.
To see the full model answer, please click below:
MODEL ANSWERThe diagram illustrates how an Australian town processes rainwater to use as drinking water.
Overall, rainwater is collected from houses and then passes through a filter into storage where it is then treated with chemicals to make it fit for human consumption.
Initially, 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 the rainwater is then passed along underground drains to the water filter.
The rainwater passes through the water filter to remove any impurities. Once it has been filtered, it continues along the pipes to a storage tank. From this point, the water goes from storage to the water treatment. At this stage of the process, the water is treated with chemicals in order to make it fit for consumption. When the water is ready for drinking, it travels along pipes that lead back into the houses in the town where people can use the water for daily consumption.
179 words (note, I’ve put the word count for your benefit. You do not need to put the word count in the real test. Always try to make sure you write between 170 and 190 words. Writing too much or too little will lower your score.
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MORE IELTS Writing Task 1 Model Answers
- Diagram Model: Cement & Concrete
- Line Graph Model: Consumption of Spreads
- Table Model: Consumer Spending


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