Part of the water operator pass
California Wastewater Grade I practice exam: the full 80-question exam
45 true/false · 25 multiple choice · 10 math · 150 minutes
The State Water Board’s Grade I format, scored on points: you need 94.5 of 135 points and 20 of the 40 math points. Every option is explained afterward.
Before you start
- True/false questions have two options; multiple choice and math questions have four, with one best answer.
- Points: true/false 1, multiple choice 2, math 4 (135 in all). The questions come in that order, as on the exam.
- Format, time and pass rules are the Board's. Our math problems are four-option multiple choice; on the exam you may enter or select them differently.
- You can skip, go back, change answers and flag questions. The 150-minute clock keeps running in background tabs and reloads, and the exam is submitted when time runs out.
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.