The electric pump house represents a further move forward in technology. These pumps were required, not only to meet the ever increasing demand for clean water, but also to provide the increase in pressure required by the advances in water treatment technology.

The first two sets of motors and pumps were installed for river water and treated water pumping in 1926. The river units are vertical spindle, the motors and all electric systems are well above any flood levels and the pumps are housed below river level.