![]() ![]() ![]() These resources will not completely cover all exam subject areas. They will not replace the appropriate training and experience an operator should have. JanuStudy Guides for Examinations, Math Problems and Practice QuizzesĪre you preparing for upcoming water/wastewater examinations? Recommended study materials are available through the Ontario Water and Wastewater Certification Office (OWWCO) Bookstore.Īdditional resources have been provided below and are examples intended to help operators practice questions they may see on exams.
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