Atlatec, S.A. de C.V. is a subsidiary of Japanese group Mitsui & Co Ltd., founded in 1956 for designing, construction, financing and operation of wastewater treatment plants in Latin America and other regions. In Mexico, the company is in charge of the following municipal plant projects: El Ahogado, Agua Prieta, Chihuahua Sur, Chihuahua Norte, Atotonilco, San Pedro Mártir Querétaro and Nuevo Laredo. In Trinidad and Tobago it operates WASA San Fernando plant, as well as in Venezuela it owns José Venezuela industrial plant. In addition, it develops projects in Hungary and China. The company is headquartered in San Pedro Garza García, México.