The chief executive of Saudi Arabia's National Water Co, Loay Al Musallam, has said that the kingdom plans to invest SR200bn in water projects over the coming 15 years, 70% of which will be for sewage and waste water treatment projects, Reuters has reported. 'We currently have a sewage project in Riyadh and Jeddah with an investment of SR18bn and we are looking to expand these projects to the rest of the kingdom,' he said. The company controls all of the kingdom's groundwater wells and sewage and desalination plants.