S3R is an independent consulting firm based in Canada, founded in 2010. The company specializes in waste management optimization and circular economy solutions. S3R partners with organizations to enhance their waste management processes, aiming to reduce costs, improve environmental performance, and ensure compliance with regulations.

The firm offers a comprehensive range of services, including waste characterization and analysis, contractual oversight, and the development of optimization strategies tailored to specific waste profiles. S3R supports clients in various industries, such as transportation, manufacturing, and general commercial businesses, focusing on reducing landfill dependency and enhancing recycling efficiency. Their approach includes a four-phase methodology that covers analysis, optimization, implementation, and ongoing monitoring to ensure sustained improvements and financial savings.