- EcoChem Biotech Inc.
 - Engaged in research, development, and manufacturing of advanced organic technology for waste management and agricultural applications. - Bennett Environmental (1)
- Dayton & Knight, Ltd.
- Providing engineering and environmental consulting services for wastewater, stormewater, solidwaste, and other environmental projects.
- SENES Consultants Limited
- Provides pollution control services ranging from acid mine drainage to air emissions. Also offers solid and hazardous waste management services.
- Conporec Inc.
- Operating a municipal solid waste processing facility which uses composting technology to process organic wastes.
- Hotz Environmental Services
- Recycler/exporter of paint products; specialising in household and industrial hazardous waste management; and metals recycling.
- Pazner Environmental Ltd.
- Specialise in waste and recycling management solutions.
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