Water management

The sustainable management of site water where it is withdrawn, used and disposed of encourages the maintenance and improvement of water use efficiency, ensuring less waste and reduced environmental impact. Ansaldo STS manages water resources with particular attention and over the years has conducted a number of water-saving initiatives. These include the installation of photocell faucets in Italy, projects to recover rainwater at the Riom site (France) and projects to replace the cooling towers with dry systems.

Ansaldo STS’s “Water management guidelines” are applied to all companies with the aim of defining the methods to be followed by the group’s Italian companies for the sustainable management of water at office and production sites.

Ansaldo STS’s water procurement sources include aqueducts and water tables where water is drawn through wells.

WITHDRAWAL OF WATER201320142015201320142015
Water drawn from aqueducts (m3/year) 24,715 15,732 14,726 113,125 171,617 160,942
Water drawn from wells (m3/year) - - - 41,854 42,007 41,906
Other sources of procurement (m3/year) - - - 83 92 132
TOTAL 24,715 15,732 14,726 155,063 213,716 202,979

The use of water is mainly for civil purposes. Water consumption at the Tito Scalo (Italy), Riom (France) and Batesburg (US) sites is very low. These sites reduced their withdrawal of water substantially (-40.4%) from 2013 to 2015, as the Tito Scalo plant cut the amount of industrial water it used for fire drills and irrigation of green areas. The amount of water used for production decreased because electrical circuit cards are no longer rinsed.

Water withdrawal at office sites has also decreased on 2014 (-5.0%).

The water consumption per employee indicator shows a reduction of 10.9% at the production sites despite the increase in employees, while the office sites show a -2.2% decrease as consumptions were reduced less than proportionately to the reduction in the number of employees.

The wastewater produced at the sites can be classified, on the basis of its use upstream from disposal, as domestic (or similar) and industrial. All Ansaldo STS sites produce wastewater that can be exclusively classified as domestic or similar, except for the Tito site. All the domestic or similar wastewater is discharged into the sewers. The Naples site uses an organic wastewater treatment system. The sites use authorised disposal points: the Batesburg and the Tito Scalo sites’ points are monitored.

Volume of domestic or similar wastewater (m3/year) 12,198 8,863 11,007 109,181 126,918 118,483
Volume of industrial wastewater (m3/year) (mc/anno) 12,517 2,518 1,400 - - -
TOTAL 24,715 11,381 12,407 109,181 126,918 118,483

Industrial wastewater, produced only at the Tito Scalo site, decreased due to favourable weather conditions that allowed a large reduction in consumption. The rinsing water is discharged directly into a consortium sewer while the first rinse water is collected in an external tank and eliminated as waste.