TEHRAN – Iran’s National Water and Wastewater Engineering Company has managed to attract 4.6 quadrillion rials (over $9.2 billion) of investment in the country’s water and wastewater projects, an official with the company said.

According to Mohammad Tafazoli, the company has managed to implement and financed many projects in different ways, such as cross-selling, retention of title (ROT), build-operate-transfer (BOT), and build-own-operate (BOO) contracts.

EF/MA