Sewage Pumping Station 27 is a heritage-listed former sewage pumping station situated in Callan Park, Rozelle, Inner West Council, Sydney, New South Wales, Australia. It is also known as SPS 27. The building is located on the southern side of King George Park. The property is owned by Sydney Water. It was added to the New South Wales State Heritage Register on 18 November 1999. History In 1873, Sydney Harbour was found to be grossly polluted with water-borne diseases. After a severe outbreak of typhoid fever in 1875 the government created the Sydney City and Suburban Health Board to investigate an alternative means of disposing of the City's growing sewage waste. This led to the construction of the Bondi Ocean Outfall Sewer (BOOS) in 1889 and the creation of the low level sewage pumping station system to transfer sewage against gravitation in low lying areas around the Harbour. Twenty Stations were built in the first generation of LLSPSs late in the 19th century, and in the subsequent development of other Ocean Outfall Sewers to serve the southern, western and northern suburbs, more than 115 pumping stations were in operation by the late 1950s'. The physical manifestations of the first 50 years of this system are the station superstructures, the majority of which are still functioning today. SPS27 itself was built in 1911-12 by the Metropolitan Board of Water Supply and Sewerage. It was decommissioned in 1997 after an investigation in the early 1990s revealed that the building was in poor condition and was "at the end of its useful life"; it was replaced by a new station on an adjacent site. Conservation works were undertaken in 2014, reflecting the site's heritage value. Description SPS 27 is conventional LLSPS with a concrete substructure and a single storey sandstone superstructure designed in Federation Romanesque. The structure was designed to be sympathetic with the nearby Kirdbridge block of the Callan Park Hospital. Externally, there is a hipped corrugated iron roof and a timber louvered ventilator; boxed eaves; random course picked sandstone walls; multi-paned timber framed fixed sash windows with multi-paned timber framed fixed sash windows with multi-paned fanlights and dressed sandstone surrounds. Entrance consists of a timber framed, ledged and sheeted double opening door with original hasp and staple, keeper and top/bottom bolts. Above the door is a recessed sandstone panel inscribed "MBWS & DB 1911". Rainwater goods consist of colourbond gutters and