date:Sep 06, 2013
ornia found it cheaper to recycle wastewater into drinking water than alternatives such as pumping it from the distant Colorado River, he said.
It costs a lot of energy to treat the water with membranes but the technology is getting cheaper, he said.
Manzoor Qadir, an author of the study at UNU-INWEH, said costs of treatment could be kept down according to purity - for drinking water, for food crops or for crops such as biofuels.