The Joint venture Impregilo (Italy)/Sa Healy (USA) has been awarded the contract for the construction of a new wastewater collector in Buenos Aires, within the framework of an environmental remediation program of the metropolitan region of the capital. The total value of the project – promoted by Agua y Saneamientos Argentinos SA, the leading operator in water treatment in Argentina, is about EUR360 million. The project includes the collection of wastewater from the Riachuelo plant via a 40 m-deep shaft to be carried to a diffuser on the bottom of the Rio de la Plata through an 11 km-long tunnel with 3.8 m diameter. Visit www.aysa.com.ar and www.impregilo.it. 33/13.

Agua y Saneamientos Argentinos SA (Aysa) secured to Fisia Italimpianti (Genoa) of Salini Impregilo Group a EUR194.88 million (USD215 million) contract to build Lot 2 of the Riachuelo system in Buenos Aires. The contract includes the development, within a 36-month period, of a pre-treatment wastewater plant and accompanying pumping stations with a capacity of 27 m3 per second that will make it one of the biggest plants of its kind in the world. The project is the second of three lots of the Riachuelo system that will contribute to improving the severe environmental conditions of the Matanza Riachuelo River Basin, guaranteeing flexibility and safety to the water purification system of Buenos Aires and having a direct impact on the health and quality of life of its 4.3 million residents.

To be completed by 2022, the Riachuelo system will treat 2,332,800 cubic metres of wastewater a day. Given its social and environmental importance, the EUR1.09 billion (USD1.2 billion) cost of the system is supported financially by the World Bank.  Visit https://www.fisiait.com/en.  26/19.