Certified Water Specialist Exam Prep
Free practice questions

Free CWS Practice Questions

1 exam-style questions with answers and explanations. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.

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The CWS exam has 150 questions and runs 3 hours.

Question 1

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Correct answer: A - A

What's on the CWS exam

The Certified Water Specialist (CWS) exam is organized into 6 knowledge domains. These free practice questions are drawn from across them so you can see where you're strong and where to study:

  1. Basic Water Knowledge 23% of exam
  2. Water Problem Diagnosis 17% of exam
  3. Treatment Technologies Applications 38% of exam
  4. Installation 6% of exam
  5. Service & Maintenance 4% of exam
  6. Regulatory 11% of exam

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