Our environmental activities at Sa Canna

With post-operational environmental activities and the Cammino Minerario di Santa Barbara agreement, we have given the area back to the community.

Sa Canna, our commitment for the environmental management of the site

The Acqua Sa Canna site, located in the southwestern coastal region of Sardinia, in the municipality of Gonnesa, included the Acqua Sa Canna 1 and Acqua Sa Canna 2 Guroneddu landfills where waste from the metalworks at Portovesme and San Gavino Monreale was disposed of. The Acqua Sa Canna 1 landfill was permanently closed in 2001, while Acqua Sa Canna 2 ceased operations in 2003. As Eni Rewind, we took over the site in 2005, following the incorporation of the Ambiente company, and managed the post-operative monitoring activities, which in Acqua Sa Canna 2 Su Guroneddu were completed in 2021. Since 2018, with a view to giving value to the area, we have signed an agreement with the Fondazione Cammino Minerario di Santa Barbara, thanks to which pilgrims and hikers can now explore the Acqua Sa Canna area that is part of a tourist-religious itinerary marked by various testimonies to Sardinia's mining history. As of 31 December 2025, we have incurred environmental costs for our areas amounting to €20 million.

Sa Canna at a glance

Location: Italy, Sardinia

Start of the environmental interventions: 2002

Acqua Sa Canna past and present

Site history.

Eni Rewind takes over the site

After the incorporation of the Ambiente company, Eni Rewind became the owner of the site, taking over the management of post-operative monitoring.

Launch of environmental interventions

With the approval of the landfill closure project, environmental interventions begun, followed by post-construction monitoring.

Landfill closure

Acqua Sa Canna 1 was permanently closed in 2001 while Acqua Sa Canna 2 ceased operations in 2003, after ensuring the continuity of plants waste disposal.

Establishment of the Acqua Sa Canna site

The Acqua Sa Canna landfill was authorised to operate by the Sardinia Region.

Our activities at Acqua Sa Canna

The project for the closure of the Acqua Sa Canna 1 landfill included covering waste, waterproofing the top area, environmental restoration, and planting Mediterranean shrub species, in harmony with the surrounding landscape. Today, the top area has a panoramic viewing point offering sights of the western coast of Sulcis. For the Acqua Sa Canna 2 Guroneddu, the activities related to its closure included covering the top of the waste by reprofiling and the installation of an HDPE sheet, as well as installing piezometers.

As Eni Rewind, we performed routine post-operative maintenance and a monitoring plan which includes meteorological and particles data collection, planimetric and altimetric surveys, groundwater sampling and analysis from piezometers, air, vegetation, soil, and water sampling, and inclinometer surveys. For Acqua Sa Canna 2 Su Guroneddu, post-operative management was completed in 2021, and we are currently monitoring, sampling, and analysing groundwater on a regular basis.

Environmental rehabilitation and shrubs planting on the former landfill area

Acqua Sa Canna in the Cammino Minerario

In 2018, we signed an agreement with the Santa Barbara Cammino Minerario Foundation to valorise the former landfill site, located in the Sulcis Iglesiente Guspinese area. Under the agreement, we committed to establishing free right of way for thirty years and to ensuring the safety of pilgrims and hikers crossing the panoramic viewpoint created on the summit of the former landfill. The new section of the historical-religious-cultural itinerary, which winds for approximately 400 km along ancient mining trails and places of worship dedicated to the miners' saint, was inaugurated in July 2019. In January 2026, the Cammino di Santa Barbara was presented with the Global Choice Award by Komoot (the world’s largest outdoor platform), a prestigious award given in the field of hiking trails and slow tourism. The path was recognised as an authentic, engaging experience, capable of telling the story of the territories through the Cammino.