Water management

Although Snam’s water procurement and disposal activities are of little environmental significance, both in relation to the quantity used and the type of discharge, the Company regards water as an asset to be preserved and is committed to doing so. In sites not served by the sewage systems, Snam installed more than 18 closed-cycle phyto-purification system where waste water is treated and fully absorbed by the planted vegetation.

In 2017, approximately 4.17 million cubic metres of water (4 million cubic metres of sea water and 0.17 million cubic metres fresh water) were extracted. The procurement of sea water remains basically constant over time, as it is used for cooling auxiliary equipment in the LNG regasification plant. The extraction of fresh water, used mainly for office activities, fire-protection systems and for the watering of green spaces, fell by 4% compared to 2016.

With regard to water discharges, the sea water is released into the sea as it is, without any treatment, while the waste water is channelled into the sewage networks (40% of the total) or discharged, after treatment, into the soil and into surface water bodies (60% of the total).

The upstream storage activities produced approximately 4,900 cubic metres of process water (-5.5% compared to 2016). Of all this water, around 1,600 cubic metres were re-injected as it is, while another (3,300 cubic metres) were sent to a purification plant for treatment.

Fresh water procurement (103 m3)

Fresh water procurement (103 m3) (Bar chart)

Fresh water discharges (103 m3)

Fresh water discharges (103 m3) (Bar chart)
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