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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.

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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

OOWA’s 2023 Fall/Winter edition of the Onsite newsletter was released!

In this edition: Meet OOWA’s newest staff member, Claire! How Being Too Busy Can be Bad for Business Engaging the Next Generation 2024 Convention Keynote Speaker Announcement Saying farewell to a champ How can your OOWA membership save you money? Chamber vs. Leaching Chambers in Shallow Buried Trench Leaching Beds and more! […]

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Submit a presentation proposal for our Annual Convention

Here are the details for submitting a presentation proposal. The deadline to submit a presentation abstract is Friday, September 29, 2023. We are especially seeking technical presentations and case studies. Email with the following: Your presentation abstract (one page, up to 500 words) A brief bio of the presenter Photo of the presenter Your availability to […]

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Seeking ads and articles for our next newsletter

Would your business like to advertise in our fall edition of the Onsite newsletter? Ads start at $350 + HST for a business card sized ad for OOWA members; the non-member rates start at $435 + HST. Details about our audience and reach, plus full pricing options, are below. Contact us with artwork and payment by October 2 to […]

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