Despite Growing Capacity, Treated Wastewater Is Not Valued 

The annual processing capacity of wastewater treatment plants in Iran has surpassed 2 billion cubic meters, up 50% compared to 2013, the head of Tehran Water and Wastewater Company's Department of Financial Affairs said.
“There are about 258 effluent processing facilities across the country, which treat 6 million cubic meters of wastewater per day, but regrettably the value of this resource is not appreciated in Iran,” Mina Rafati was also quoted as saying by the Energy Ministry’s news portal.
Close to 53% or 9 million water subscribers nationwide are linked to the sewage network, of whom 5.7 million are in the capital city of Tehran, she added.
The official noted that industries’ total annual demand for water is estimated to be about 1.3 bcm that can be met through treated wastewater.