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.

2015 Fall/Winter OnSite Now Available!

The digital version of OOWA’s tri-annual newsletter, OnSite, is now available on our website. Highlights of this edition include:

  • Meet the OOWA Board of Directors
  • Member Profile: Rick Howden and Core Earthworks
  • Cottage Country Concerns with Septage Management
  • Cross Country Check Up with Provincial Onsite Associations
  • Professional Development with OSPE and OGWA
  • Fueling Innovation in Onsite and Decentralized
  • Tips to Avoid the Deep Freeze

Read more


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