COVID-19 is a serious threat to our health. OOWA’s staff, its committees and its Board of Directors are all actively working to help our members serve their communities safely. Learn More

OOWA is an industry leader in education and advocacy for onsite sewage systems, commonly known as septic systems, and decentralized wastewater management in Ontario

Find a Professional

OOWA is dedicated to providing access to a large network of onsite wastewater professionals throughout Ontario. Our members include a wide range of disciplines such as sewage (septic) system design and installation to septic tank pump-outs, repair, and inspections.

Find a Professional

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When you become a member of OOWA, you are joining a network of engaged professionals who are leaders in the onsite industry and in their communities. Our members have access to leading continuing education resources and association benefits.

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Homeowner Resources

Our goal is to help homeowners find resources about septic systems. Learn more about how septic systems work, how to prolong their life, how to get one installed on your property, and why onsite wastewater management is good for your property and the environment.

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Video Library

Are you a rural homeowner looking to learn more about your sewage (septic) system? Are you an industry professional looking for resources? OOWA has started populating our new YouTube channel with content for various audiences. Check back often for our latest releases!

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Our members have access to quality education and training across the province. OOWA recognizes a number of educational providers who offer a wide variety of courses and training schedules. Courses delivered by these recognized providers may be used towards accreditation and experience requirements needed to qualify for the Registered Professional Program.

Learn More About Training

Guidance Documents

OOWA’s Onsite Technical Committee (OTC) has prepared two peer-reviewed guidance documents with the goal of providing clarification and uniform practices regarding many industry undertakings including the installation of sand filter beds and pump chambers, to name a few.

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Find older issues of OOWA’s newsletter in our archive.

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Latest News & Events

Fall/Winter Newsletter Now Available!

Highlights in this edition:  Updated B66-21Standard for Septic Tanks Installer’s Corner (new column!) Meet the Staff! Maintaining excavator undercarriages Phosphorous removal technology for cottage Motivating your workers Logistics in managing remote mine site Communal servicing just the beginning The return of ‘Rob’s World’ (?) […]

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Septic Sense Week: Day 1

During Septic Sense Week, OOWA will be posting tips and guidance on our social media platfoms to help homeowners manage theirs systems effectively. Here’s the message from today’s posting: “Your septic system is a biological system!Aerobic bacteria in your septic tank breakdown solids and pre-treats the effluent. Do: Flush pee, poop & paper (TP) Don’t: […]

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Check out our new Honorary Member category!

OOWA is blessed with many members who donate hours of their time, share expertise and experience to improve the Association for all our members – present and future. With this in mind, we have created a new membership category – Lifetime Member. If you know anyone that meets or exceeds the requirements below, please get […]

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