Largest water desalination plant opens in Oman. Muscat – The largest water desalination plant was officially opened, pumping up to 281,000 cubic metres per day. The Barka Desalination Company has announced the commercial launch of the Barka Independent Water Project (IWP). A consortium made up of Itochu Corporation, ENGIE, SUEZ, and Towell Engineering, to finance, build and operate a new seawater desalination plant in Barka under a 20-year Water Purchase Agreement. (LINK). HIWI042018-07-18T01:27:07+02:00