Operator drill: Coagulation and filtration

10 questions · Untimed · Every option explained

Coagulation and flocculation, jar tests, sedimentation, filter operation and backwash, turbidity and filter problems. Ten questions from our coagulation and filtration bank, with an explanation for every option.

Line drawing of six beakers on a jar test stirrer with different amounts of floc, beside a gravity filter showing sand and anthracite layers

Before you start

Most questions have four options and one best answer; true/false questions have two.
Check each answer to see why every option is right or wrong before moving on. Checked answers cannot be changed.

Game Assessment Prep is an independent practice site, not affiliated with or endorsed by Water Professionals International (WPI, formerly ABC), the California State Water Resources Control Board or the Texas Commission on Environmental Quality. Every question is original; none is taken from a certification exam, an official study guide or another prep provider.