Hera Group acquires Sostelia Group for €138M, becoming Italy's leading water treatment player

Hera Group has finalized the acquisition of 100% of STA and its subsidiaries (Sostelia Group) for €138 million. The deal makes Hera Italy's leading private player in water treatment, with over 1,200 treatment plants and 350 employees.

“Today the Hera Group has finalised the acquisition of 100% of STA Società Trattamento Acque S.p.A., based in Mantua, together with its subsidiaries”eng.gruppohera.it

• 2 sources
• eng.gruppohera.itHera Group finalises the acquisition of the Sostelia Group and becomes Italy’s leading player in water treatment - Hera GroupMar 16, 2026
• marketscreener.comHera acquires Sostelia Group in EUR138 million deal | MarketScreenerAlliance NewsMar 16, 2026

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