Treating wastewater 

The disposal of untreated or poorly treated wastewater in the natural environment produces pollution that is catastrophic for biodiversity and the quality of water resources. To meet this challenge, regulations on water quality have been tightened to protect the environment. At the same time, specifications for the treatment of urban wastewater have become much more stringent.
live without access to enhanced sanitation services
of wastewater is discharged without prior treatment in developing nations
of the world’s fresh water reserves are polluted

Limiting the impact of wastewater treatment plants on the environment

As part of the process to optimise facilities, we set up preventive maintenance plans. This approach helps guarantee the longevity of wastewater plants and ultimately conserves legacy assets. 

Compliance with local health and environmental standards 

Our wastewater treatment facilities are fully compliant with health and environmental standards. We guarantee meeting the water quality standards required for treated wastewater, or use as recycled water. In addition, we meet the standards that apply to discharges. At SUEZ, we design, build, and operate wastewater plants that are optimised for investment return and operating cost efficiencies.

Process performance

In the field of urban wastewater treatment, we have developed new solutions that can combine a biological treatment with refining using membrane filtration. Our efficient designs with smaller footprints enable operators to lower the consumption of energy and reactive agents. These solutions support the preservation of biodiversity in the natural environment, as well as serve to protect water resources.


Today more than 3.5 million Australians are serviced by a wastewater treatment plant operated and maintained by SUEZ and our partners. We operate as both project manager and water treatment specialist, taking full control of all stages of the process to design and build treatment plants.

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