California Water Treatment T5 Exam Prep

Current Status

500 original practice questions across 5 content areas, organized around the knowledge and judgment the Grade T5 oral examination examines.
Written practice for an oral examination — every question is a prompt to build the complete answer you would give the panel.
A fixed set of 12 free sample questions, so you can gauge the style before you buy.
A full 100-question practice exam (180-minute practice clock) drawing fresh questions on every attempt.
Calculation items throughout — 60 across the bank — all solvable from the board’s Equivalents and Formula sheet.
Our practice exam is scored against a 70% practice benchmark — a target we set for practice scoring. The real Grade T5 examination is an oral examination graded pass/fail by a panel; the board publishes no numeric passing standard for it. PRACTICE BENCHMARK ONLY — your score here is a study signal, not a result on the real exam.

A drill for each of the 5 topics:

Lesson Content