Preparing for your certification? These free practice exams are built specifically for water and wastewater operators working hard to get that certification! Each practice exam contains 25 multiple choice math problems, full step-by-step answer key, and a formula reference sheet you can keep for your own use.

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What you get: Water Operator Practice Exam

- 25 math problems covering flow rate, tank volume, chlorination, chemical dosing, pressure and head.

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What you get: Wastewater Operator Practice Exam

- 25 math problems covering BOD loading, TSS and solids, clarifier rates, detention times, and effluent disinfection.

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Step-step-by-step answer keys for every question.

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Formula reference sheet that you can print and keep.

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Bonus Math Refresher Study Guide- refresher that includes fractions, decimals, conversions, and much more.

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