Fisia Italimpianti S.p.A., part of the Webuild Group (formerly Salini Impregilo), is headquartered in Genoa, Italy, and specializes in the design and construction of desalination and water treatment plants. Founded through a series of mergers dating back to 1926 (celebrating 100 years in 2026), the company operates as an EPC/Design-Build and turnkey contractor, primarily in the Middle East. Installed and under-construction desalination plants account for a total production capacity of 4,800,000 m3/day (1,055 MIGD). Covers both thermal and reverse osmosis desalination, plus municipal and industrial wastewater treatment.