https://www.openstreetmap.org/way/1249459181

man_made=water_works is "a facility where water is treated to make it suitable for human consumption before being sent to the water network." per the wiki.

However the building is labeled "SPS", which is per https://wiki.openstreetmap.org/wiki/Sydney_Water a Sewage Pumping Station. A water_works (water treatment plant) would be WT.

I've since added this detail to the building at https://www.openstreetmap.org/way/1249459180 so I'll just leave the landuse but remove water_works.