The Saudi Organisation for Industrial Estates & Technology Zones has signed contracts worth SR 2,000 million ($535 million) with Industrial Cities Development & Operation Company for the management of water services in Dammam 1st and 2nd industrial cities and Al-Ahsa 1st Industrial City. It follows deals in October with International Company for Water Distribution (Tawzea) for water services in Jeddah, Riyadh and Al-Qassim.