Execution of environmental development projects in eastern Riyadh, house connections and preparation of necessary studies for that, and follow up of all the contractors’ works. The total lengths of the implemented pipes are 2,380 km and diameters ranging from 200 mm to 1,200 mm of different types (pottery, GRP), as well as the implementation of house connections to sewage for 50,667 household connections. Providing technical consultancy and technical support to the National Water Company.