Potts Point Water Hardness & Quality Report (2026)

Sydney Water provides drinking water to Potts Point, a suburb within the City of Sydney local government area. The primary water source is surface water drawn from Warragamba Dam, which is part of the Hawkesbury-Nepean River system. This supply is further augmented by water from other reservoirs, including Woronora, Nepean, Avon, and Tallowa. Treated water for Potts Point comes from the Prospect supply zone, which also serves the Sydney CBD and surrounding eastern suburbs. The water undergoes treatment at major facilities such as the Prospect Water Filtration Plant, Orchard Hills, and North Richmond. Sydney Water is responsible for the drinking water needs of over 5 million residents throughout Greater Sydney.

The catchment area for this supply is vast, covering 21,000 square kilometers of bushland in the Blue Mountains and Southern Highlands, known as the Greater Sydney Warragamba catchment. Geologically, the region is characterized by Triassic Hawkesbury Sandstone and Narrabeen Group shales, with older Permian coal measures and granitic intrusions from the Lachlan Fold Belt found deeper beneath. The absence of significant limestone or dolomite formations means that mineral leaching into the water is minimal. Rainwater filters through sandy soils, contributing to the naturally soft water profile with low ionic content.

Because the water is soft, residents in Potts Point won't experience issues with limescale buildup in household appliances like kettles, dishwashers, or washing machines. This gentle water quality is also beneficial for skin and hair. You won't find soap scum or spotting on fixtures, and maintenance related to mineral deposits is generally unnecessary. In fact, installing a water softener is not recommended, as it could strip beneficial minerals. Standard cleaning practices are sufficient for any rare deposits. Sydney Water ensures the water's pH is maintained between 6.5 and 8.5, meeting Australian Drinking Water Guidelines, and consistently controls levels of lead, copper, disinfection byproducts, and metals.