All drinking water and wastewater operator certification exams that were scheduled up to Tuesday, June 30, 2020 are being postponed. We are contacting all those impacted. Our office will provide rescheduling options when they become available.

To write an examination you require the following:

1. proof of grade 12 or equivalent*; and,
2. a completed application form with payment.

*If you have education other than an Ontario Secondary School Diploma, please see Guideline 3.1 for more information. If your education is on file with a previous exam, you do not need to resubmit this with your current application.

Exam seating is limited. Applications are processed based on the order in which they are received. Incomplete applications will not be processed.

For information on the examination process, including forms, fees, and the cancellation policy, visit our Writing an Examination page.

Study manuals can be ordered through the OWWCO Examination Study Guide Bookstore.

* Indicates a single exam session – only one exam per person may be written on this date.