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 800 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 billions of dollars worth of capital projects each year. Our projects ensure clean safe drinking water and environmentally responsible wastewater treatment and disposal.