- Air Quality
- Gastech Australia
 - Osborne Park - Provide gas detectors and flame detectors for the mining and industrial industries.
- Monitoring, Sampling, and Testing
- Odour Unit
- Myaree - Services include odour sampling, testing, dispersion modelling, community consultation, and control system design.
- Natural Resource Management > Erosion Control
- Grass Growers
- North Beach - Specialise in hydromulching and hydro seeding machines.
- Natural Resource Management > Water Resources
- Aquaterra
- South Perth - Water resource and environmental solutions, primarily to the mining industry.
- Waste Management > Solid Waste
- Atlas
- Perth - Waste to energy project - solid waste digestion facility.
- Water Supply and Treatment > Municipal and Drinking Water > Utilities
- Water Corporation
- Leederville - Responsible for the provision of water, wastewater, drainage, and irrigation services in Western Australia.
- Water Supply and Treatment > Municipal and Drinking Water > Wastewater
- BioMAX
- Perth - Provides wastewater treatment and disposal solutions for both residential and commercial purposes.
- Water Supply and Treatment > Wastewater > Municipal@
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