# 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.

- Type: Acquisition
- Announced: 2026-03-16
- Where: Italy
- Value: $150.0M (138.0M EUR)
- Jobs: 350
- Status: completed
- Products: water treatment services
- Sectors: [Water Treatment Equipment](https://endata.com/sectors/water-treatment-equipment.md)

## Companies

- [Hera](https://endata.com/companies/794.md) (acquirer)
- [Sostelia Group](https://endata.com/companies/89727.md) (target)

## Sources

- [eng.gruppohera.it](https://eng.gruppohera.it/-/hera-group-finalises-the-acquisition-of-the-sostelia-group-and-becomes-italy-s-leading-player-in-water-treatment), 2026-03-16: "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"
- [marketscreener.com](https://www.marketscreener.com/news/hera-acquires-sostelia-group-in-eur138-million-deal-ce7e5edadc88f222), 2026-03-16: "The transaction, which carries an Enterprise Value of EUR138 million, 'is estimated to contribute more than EUR20 million to the growth of the Hera Group's consolidated EBITDA, in addition to the value of expected integration synergies,'"

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.