Septic System installation 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

Image courtesy of Peterborough Public Health, Photo by Wayne Eardley

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 septic system design and installation to septic tank pump-outs, repair, and inspections.

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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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About OOWA

The Ontario Onsite Wastewater Association (OOWA) is a provincial not-for-profit association dedicated to promoting the benefit and value of onsite and decentralized wastewater management through education, improved standards of practice, and advocacy for sound policies across the province. We work closely with industry professionals as well as policymakers and enforcement authorities, academics, researchers, and teachers.

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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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Best Practice Documents

OOWA’s Onsite Technical Committee (OTC) has prepared two peer-reviewed guidance documents with the goal of providing clarification and uniform practices regarding the installation of sand filter beds and pump chambers.

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Latest News & Events

OOWA’s Convention & Expo News: In-Person Event Cancelled for 2021

Due to the uncertainty regarding the COVID-19 pandemic, OOWA’s Board of Directors has decided to cancel our 2021 Convention and Expo that was scheduled for February 28th to March 3rd at the Ottawa Convention and Event Centre. In lieu of hosting an in-person event, OOWA ‘s convention organizing committee is considering virtual platforms to bring […]

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Septic Sense Week Day 4

Septic Sense Week, Day 4: Protecting your home’s infrastructure and saving money on preventable repairs means having a degree of awareness about it. Get to know your septic system! Get help with the homework here: . Be #onsiteproud! […]

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Septic Sense Week, Day 3

Effluent filters are required on all septic tanks as per the Ontario Building Code. Get compliant & protect your leaching bed from solids that can clog the pipes and lead to sewage back ups. Check out our Homeowner Resources page for more septic info. […]

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