This publication is the examination booklet used for a home study course in water treatment. This course is the advanced part of a series produced by the Department of the Navy. This publication is designed to be used in conjunction with a course textbook. Each of the four examinations contained in this document are referenced to a specific section of the text. All of the questions are multiple choice and are cognitive or problem solving type questions. Each of the examinations contains 35 questions. Many of the questions have to do with water treatment and water pollution chemistry and with water treatment tests and equipment usage. (MR)