Looking for resources to help prepare for upcoming examinations? Study guides and manuals are available through the Ontario Water and Wastewater Certification Office (OWWCO) Bookstore linked below.
Many operators seek out additional resources for study purposes. For your convenience, some links have been provided below. These resources are intended to help operators prepare for exams and are not intended to replace the appropriate training and experience an operator should have. These resources will not completely cover all exam subject areas.
Formula and Conversion Tables
Sample Exam Questions and Study Guides