Commercial operations have commenced at the Atotonilco Wastewater Treatment Plant, an important project being developed by Mexico-based Mitsui & Co. consolidated subsidiary Atlatec, together with leading Mexican infrastructure company IDEAL, as well as ACCIONA AGUA, a leading water engineering and operation company in Spain.

As a single plant with a processing capacity of 3.6 million tons per day, the Atotonilco Wastewater Treatment Plant is the world's largest wastewater treatment facility, treating about 60% of the domestic wastewater produced from the metropolitan area of Mexico City, which has a population of over 20 million.

Mitsui has already participated in 12 build-operate-transfer (BOT) projects in Mexico, including wastewater treatment projects for municipalities, and industrial wastewater treatment projects at refineries for Pemex, a Mexico state-owned oil company.
Going forward, Mitsui, together with Atlatec, will continuously strive to contribute to regional communities and environmental improvement in Mexico.