The Supervisor (Water & Sewer Systems) Passbook® prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: supervision; water distribution systems and fire hydrants; installing, repairing and servicing fire hydrants, valves and water service boxes and maintaining water lines; sanitary and storm sewer systems; sewer system safety and trenching practices; understanding and interpreting technical information and construction and site plans; and more.