Muswellbrook’s first town water supply was commissioned in 1913. Water was drawn from a well behind the treatment works by means of a pump operated by a gas engine.

Muswellbrook Shire Council supplies approximately 4,936 water connections within the Shire (Muswellbrook, Denman & Sandy Hollow) with the bulk of this water from the water treatment plant in Scott Street, Muswellbrook. The water is pumped out of the Hunter River at a rate of 230 litres per second. Once it is pumped out of the river it is pumped into the clarifier, where lime and ferric sulphate are added to the water to reduce the hardness. The hardness is reduced so that when people are using town water to shower with they can get a lather from their shampoo and soap.