Welcome to the website for the Ontario Water Wastewater Certification Office. Explore our site to learn about operator licencing and certification under Ontario Regulations 128/04, 129/04, and 170/03.

Careers in Water and Wastewater

Water and wastewater operators serve their communities by protecting public health and the natural environment. For information on the type of careers you can expect in the water/wastewater industry, go to https://owwco.ca/careers-in-water-and-wastewater.


► The Ministry of the Environment, Conservation and Parks launched the Operator Workforce Matching Portal to help system owners and operating authorities find available certified and licensed operators.

Certified operators are invited to register, including Operators-in-Training and Class I to IV operators. System owners and operating authorities can use the portal to search for  operators by location, certificate class and type and location, and connect directly with them. All registrations are verified by OWWCO for accuracy. For instructions on using the portal, please click here.

For more information about the portal, please refer to the Frequently Asked Questions page on our website.

► Guidance Update – Temporary Certificate Renewals for Drinking Water Operators and Water Quality Analysts

►  Operator certification and licensing program changes under the amended emergency order for drinking water system and sewage works

Extended Certificate/Licence FAQs

►  Link to the Emergency Order CDWI Notification to Stakeholders

►  Please see message from the Chief Drinking Water Inspector – Enhanced Measures to Ensure Continuity of Operations for Ontario’s Water Systems dated March 24, 2020

►  Link to the amended O. Reg. 75/20 made under the Reopening Ontario (A Flexible Response to COVID-19) Act on eLaws: https://www.ontario.ca/laws/regulation/200075

WCWC New Course Listing
Click here for WCWC Course Listing.

Operator Certification Bulletin
Download and read the latest Operator Certification Bulletin, the Drinking Water and Wastewater Operator Certification News by clicking HERE.

To subscribe to our email news bulletin Click HERE.

Operator Certification Working Group (OCWG)
The OCWG provides expertise to the Ministry on matters related to the water and wastewater operator certification program.

For recent meeting highlights, please go to https://owwco.ca/operator-certification-working-group-ocwg-meeting-highlights.

Upcoming Exams


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