MWH process manager for Europe, Middle East, Africa & India Richard Ratcliffe said Dubai was keen to find ways to re-use its water, but would fail to go as far as effluent reuse.
"Water comes from desalination, and it is typically used three times – for consumption, in cooling and finally for irrigation," said Ratcliffe.
Demand for water is growing at a staggering 15% per year in the Emirate and Ratcliffe added that Dubai's Al-Aweer waste water treatment plant, the only one in the Emirate, can cope for now, but demand will soon outstrip capacity.
"The plant has 260M litres underlying capacity, with some spare for now," said Ratcliffe.
"It is looking at two extensions. The first for 75M litres, and another contract will be let for a further 80ML."
A second 300ML treatment plant is under construction ready for operation in three years time.
Ratcliffe said the greenest option was to strive for Indirect Potable Reuse.
With this, waste is processed into drinking water, but the process had so far been considered culturally unacceptable in Dubai.
This is despite a growing awareness of sustainability issues in the Emirate (News last week).