The Desolenator: Producing Clean Water IELTS Reading Answers with Explanation

“The Desolenator: Producing Clean Water” is Passage 2 of Cambridge IELTS 15 Academic Reading Test 3. This page gives the answers for Questions 14–26 with a short explanation of why each answer is right, so you can check your work and learn from every mistake. The question types are: Matching Headings, Summary Completion.

Quick answers: Questions 14–26

Question	Answer
14	iii
15	vi
16	v
17	x
18	iv
19	viii
20	i
21	wheels
22	film
23	filter
24	waste
25	performance
26	servicing

Questions 14–20: Matching Headings

Q	Question	Answer	Why
14	Section A	iii	Heading iii best sums up the main idea of this paragraph.
15	Section B	vi	Heading vi best sums up the main idea of this paragraph.
16	Section C	v	Heading v best sums up the main idea of this paragraph.
17	Section D	x	Heading x best sums up the main idea of this paragraph.
18	Section E	iv	Heading iv best sums up the main idea of this paragraph.
19	Section F	viii	Heading viii best sums up the main idea of this paragraph.
20	Section G	i	Heading i best sums up the main idea of this paragraph.

Questions 21–26: Summary Completion

Q	Question	Answer	Why
21	—	wheels	Use exactly this wording from the passage, within the word limit.
22	—	film	Use exactly this wording from the passage, within the word limit.
23	—	filter	Use exactly this wording from the passage, within the word limit.
24	—	waste	Use exactly this wording from the passage, within the word limit.
25	—	performance	Use exactly this wording from the passage, within the word limit.
26	—	servicing	Use exactly this wording from the passage, within the word limit.

Tips for these question types

• Matching headings: read each paragraph for its main idea, not a single detail, and cross out headings once used.
• Completion tasks: check the word limit and the grammar of the gap before you write the answer exactly as it appears in the passage.
• Review every mistake. Find the exact sentence in the passage that proves the answer so you can spot the same trap next time.

FAQ

How many questions does this passage have? The Desolenator: Producing Clean Water covers Questions 14–26, which is 13 questions.

Where is this passage from? It is Reading Passage 2 in Cambridge IELTS 15, Academic Test 3.

How should I use these answers? Attempt the passage under timed conditions first, then check your answers here and read the reason for every mistake.

Cambridge IELTS 15 Reading Test 3: all passages
Part 1: Henry Moore (1898-1986)  |  Part 2: The Desolenator: Producing Clean Water (you are here)  |  Part 3: Why Fairy Tales Are Really Scary Tales

← Previous: Part 1Next: Part 3 answers →

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