SPAM West Semarang project is built with a capacity of 1000 liters per second. The service area is planned to be targeted to serve three (3) sub districts divided into five (5) service zone zones, namely Tugu Sub district (zone 1), part of Ngaliyan Sub district (zone 2 and 3), and West Semarang Sub district (zone 4 and 5). Zone 1 located in Tugu is a greenfield area whose majority population uses deep wells as water source. Zone 2 and 3 are located in Ngaliyan, can be categorized as semi-greenfield area with the number of customers of PDAM is very low. Zone 4 and 5 are located in West Semarang recorded as the oldest service area which is currently already served by PDAM Tirta Moedal.