The number of consumers that use drinking water supply and sewerage systems increased 53 thousand subscribers or 4% in 2012. According to the information dated 01 January, 2013 “Azersu” OJSC renders service to 1138044 subscribers. 96% of consumers are household, 4% are non-household users. Increasing in number of consumers was undertaken as a result of strengthening control measures, registration of illegal connections, as well as registration of new subscribers 2012.