OOWA is the fastest-growing network of onsite wastewater professionals in Ontario!

Onsite Wastewater Education & Representation

The Ontario Onsite Wastewater Association (OOWA) is dedicated to representing and educating members within the onsite and decentralized wastewater industry in Ontario. Our members are among the most well respected practitioners in the industry: Educators, regulators, engineers, contractors, manufacturers, suppliers, service providers, and other parties dedicated to providing the best onsite wastewater industry services available, while working to preserve Ontario’s water resources and environment.

Summer Edition of ‘OnSite’ Now Available

OOWA’s triannual newsletter, OnSite, is now available in digital format. What you’ll find in this edition:

  • a call to action on decentralized solutions
  • filter bed sizing guidance
  • member profile
  • source water protection plans: province-wide round up
  • important information for owner/operators and small businesses
  • wastewater opportunities in the food and beverage processing sector
  • OOWA committee update:  Government Relations
  • collaborative installation case study on Georgian Bay

Read more


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