- The Saline Water Conversion Corporation (SWCC)
- 1,401,000 cubic metre(s)
- Saudi Arabia (Jubail)
The largest water desalination plant is the Jubail Plant (Saudi Arabia) which produces 1,401,000 m³ (308,176,916.9 UK gal 370,105,045.4 US gal) daily, in Saudi Arabia, as verified on 14 January 2019.
The Jubail Plant increased its desalinated water output from 1,340,000 to 1,401,000 cubic meters per day without any extra production cost. The record was also verified by the International Desalination Association (IDA).