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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.

Browse Resources

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

Go Jays Go!

Join us Saturday, September 16th, 2023 at the Rogers Centre to cheer for the Toronto Blue Jays as they take on the Boston Red Sox. We’ve secured 50 seats and will be selling tickets for $25.00 per person on a first come first served basis. This event is open to all – members, non-members, friends, […]

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New webpages on our website about training and qualification for industry roles

Would you like to become a qualified professional within the onsite #wastewater #industry? 👩‍🔧👷 OOWA has added four #NEW webpages to guide your professional journey: Check out each page here: How to become a qualified designer of onsite sewage systems How to become a qualified and registered onsite sewage system inspector (Building Inspector) How […]

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Seeking ads and articles for the summer edition of our newsletter!

Would your business like to advertise in our summer 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 […]

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