In January 2005, the PUB signed the 20-year DBOO contract with Keppel to design, build, own, and operate Singapore's largest NEWater factory, supplying up to 116,000 cubic meters per day of reclaimed water and 46,000 cubic meters per day of industrial water over a period of 20 years, beginning in December 2006. The factory has since been modified to produce NEWater only at 148,000 cubic meters per day. KIE is the environmental technology and engineering division of Keppel Corporation, with headquarters in Singapore and an operating base in Willebroek, Belgium.