On behalf of our members, the OSWCA will champion the sewer and watermain industry to promote the delivery of clean water and safe wastewater management through advocacy, education and environmentally sustainable practices to enhance the quality of like for all Ontarians. We will foster health and safety, professionalism, ethical practices, sound infrastructure investments, good governance and fiscal responsibility.


To be Ontario’s champion of sustainable clean water and safe sewage infrastructure.

Canada's only Sewer and Watermain Association

The OSWCA is a champion of environmental protection and best practices in safety and water system management. We have represented the sewer and watermain construction industry in Ontario since 1971. We represent over 750 companies across Ontario including contractors, manufacturers, distributors and consulting engineers. The OSWCA membership is structured by ten local associations, two pipe producers and one independent association. Collectively, we perform over $1 billion a year in capital projects to ensure clean safe drinking water and environmentally responsible wastewater treatment and disposal.

Members of the Ontario Sewer & Watermain Construction Association


    OSWCA is committed to developing Ontario's clean water and wastewater systems, ensuring a plentiful supply of clean drinking water and preserving our lakes and rivers. Making clean water & environmentally responsible waste water systems is a top priority.

    Why? Because Clean Water is Everybody's Business.