Welcome to the WEF Skills Builder. These quizzes incorporate math, safety, and a variety of other topics to help you test, maintain, and advance your wastewater knowledge.

Each quiz contains 10 multiple choice questions randomly selected from our question bank according to the skill level and topic you select below. You will have two chances to answer correctly and each question includes a reference link for more information.

This quiz works best using either Chrome or Firefox.

I understand that by marking the box below and taking part in the WEF Skills Builder I understand and agree that the information I enter will be collected by WEF and used in accordance with WEF’s privacy policy, the full text of which can be found by clicking the “Privacy Policy” web link at the bottom of this page.
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You are currently taking the {{selectedTopicCategoryName}} quiz for {{selectedSkillCategoryName}} skills.
There are a total of {{questions.length}} questions. Each quiz takes about 10-15 minutes You will be given a chance to review incorrect answers before final submission.

You answered {{questions.length - score}} questions incorrectly, please review your answers and resubmit.

You took the {{selectedTopicCategoryName}} quiz for {{selectedSkillCategoryName}} skills.
You answered {{score}} out of {{questions.length}} questions correctly.


You will not need to re-enter your name and email to take another quiz.