Water Operator Licensing-A Beginners Guide

There are four distinct categories of licensing in the province of Ontario, and they are:

1. Water Treatment Subsystem
2. Water Distribution/Distribution and Supply Subsystem
3. Wastewater Treatment Facility
4. Wasterwater Collection Facility

Within each of these categories, there are four classes of licensing, referred to as Class 1-Class 4 (OWWCO, 2010).


Step 1 involves deciding which of the four categories above you would like to pursue. My advice to you is to write all four, just as I did. The cost of the exam is $30.00, regardless if you write one of them, or all four. The program is administered by the OWWCO-Ontario Water Wastewater Certification office, and the link is: OWWCO.


To obtain your OIT licensing, the province of Ontario insists on the following:

• You must possess an Ontario Secondary School Diploma(OSSD) or equivalent
• Pass the exam
• Pay the exam fee of $30.00

In addition, you need to purchase the OIT Examination Study Guide, for $45.00 (OWWCO, 2010). The exam schedule is found on the  website, located on the far right side of the page, in a rectangular box marked  Examination Schedule. The information for the self study guide is: Examination Study Guide.

The picture on the right hand side of the screen
is a sample of my OIT License for Distribution.