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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


► Changes to the drinking water and wastewater operator regulations

The Ministry of the Environment, Conservation and Parks recently amended O. Reg. 128/04 Certification of Drinking Water System Operators and Water Quality Analysts and O. Reg. 129/04 Licensing of Sewage Work Operators. These amendments allow the ministry, drinking water system and sewage works owners and operating authorities to act quickly to help ensure drinking water and waterways are protected during an emergency.

Further information on the regulatory amendments can be found on the Environmental Registry, please see:

  • Amendments to drinking water operator certification regulation (019-3513)
  • Amendments to wastewater operator licensing regulation (019-3515)

Operator Workforce Matching Portal – Inviting former operators to register

The Ministry of the Environment, Conservation and Parks has invited former operators with certificates that have expired for less than 5 years to register or re-activate their profile on the Operator Workforce Matching Portal.  This will help drinking water and wastewater system owners experiencing staffing shortages find knowledgeable, experienced individuals who are currently eligible to work as emergency substitute operators under the recently amended certification regulations. Operators that are currently certified can continue to register on the portal.

The portal is a free, online tool developed and administered by the Ministry of the Environment, Conservation and Parks to help connect system owners seeking staffing resources with water operators who are available for employment. 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.

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

Upcoming Exams


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