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Simple Water Filtration System Diagram

The diagram below shows a simple system that turns dirty water into clean water.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

1 sample answer, estimated Band 7.5. Your turn?

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Sample answer (1) Key features (5) Vocabulary (3) Sentence patterns (3)

From essays on this question

Key features: Simple Water Filtration System Diagram

WhyThis is aProcess diagram — it asks you to explain a sequence from beginning to end.

SoWe split the points intoOverview(how many stages, and where it starts and ends)andStages(each step in order).

Overview

1 point

Stages

4 points

Same question · Different responses

Sample responses and feedback

Response 01

Must fixSuggested

Answer · 176 words · 4 paragraphs · 8 comments

Score details

Response 01
Estimated band7.5/ 9

Overall assessment

The response uses fluent language and a clear paragraph structure to describe filtration, transfer, storage and dispensing. Its overview could identify these main stages more directly, while the equipment paragraph unnecessarily implies a documented construction sequence. The diagram supports an upward pipe section followed by a downward bend, so the original criticism of upward flow is not justified. The small upper fitting is unlabelled and cannot confidently be rejected as a possible valve or tap.

TA

Task Achievement

The response describes filtration, transfer, storage and dispensing, but its overview would be stronger if it identified these main stages rather than emphasising simplicity and material availability. The upward pipe section is visible, so describing water travelling up it is defensible; the subsequent downward bend could be made explicit. The claimed second tap is not clearly identifiable from the unlabelled fitting.

7.0
CC

Coherence and Cohesion

The response is logically organised into an introduction, overview, equipment description and operation. However, firstly, subsequently and lastly suggest a construction sequence that the diagram does not establish; spatial links would distinguish the existing arrangement from the water-treatment sequence.

7.0
LR

Lexical Resource

Vocabulary is varied and generally precise, with appropriate expressions such as adjacent to, impure water and potable water. The introductory purpose phrase could be more concise, and tap on the drum would locate the external fitting more clearly.

8.0
GRA

Grammatical Range and Accuracy

A wide range of structures is used with strong control, including complex passive constructions, relative clauses and participial phrases, and errors are rare and non-impeding.

8.0

What to work on next

Make the overview identify filtration followed by storage and dispensing. Describe the equipment spatially, specify the layer order, and distinguish the pipe's upward section from its downward bend without assigning an uncertain function to the unlabelled fitting.

From essays on this question

Useful vocabulary: Simple Water Filtration System Diagram

From essays on this question

Sentence patterns: Simple Water Filtration System Diagram

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Part 1

You should spend about 20 minutes on this task. Write at least 150 words.

Words: 020:00 starts on first word