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Coagulation and sedimentation basins at a drinking-water treatment plant

Free practice · Water Treatment

Grade 2 Water Treatment Practice Questions

Answer each question, then reveal the correct answer and a full explanation. This is independent study material aligned to commonly tested topics, not official exam questions — exact content varies by state and exam vendor.

Photo: U.S. EPA (public domain)
Question 1Math

A plant treats 2.5 MGD and needs a chlorine dose of 3.0 mg/L. How many pounds of chlorine per day are required?

Question 2Concept

Which process is primarily responsible for removing suspended particles by adding a coagulant to neutralize their charge?

Want the full topic breakdown for this exam? See the Grade 2 Water Treatment exam guide, or start from the Water Treatment overview.