Highton Water Hardness & Quality Report (2026)

Barwon Water supplies Highton and the wider Geelong region in Victoria, Australia. The primary sources for this supply are the Barwon River, Wurrook Reservoir, and the Moorabool Reservoir system. These surface waters are processed at the Wannon and Corio treatment plants. Advanced treatment methods, including coagulation, filtration, and chlorination, are employed to ensure the water meets the stringent Australian Drinking Water Guidelines. The urban suburbs of Geelong, including Highton, are served by this system, which caters to over 270,000 residents.

The geology beneath Highton is characterized by Quaternary alluvial sediments and Tertiary basalts originating from the Newer Volcanics Province. Unlike regions with significant limestone or dolomite deposits, these formations contain very little calcium or magnesium. Surface water runoff from the surrounding forested uplands, which are geologically composed of Ordovician sandstones and Devonian granites, further dilutes any mineral content. This geological makeup, typical of western Victoria's basaltic terrains, consistently results in very soft water with a low mineral profile.

Because the water is naturally soft, homeowners in Highton won't face issues with limescale buildup in appliances like kettles, dishwashers, or hot water systems. This lack of scale means less maintenance and optimal energy efficiency for heating water. Soap and detergents lather more easily, reducing the amount needed and keeping fixtures cleaner for longer. There's no need to install a water softener, saving on equipment costs and the addition of sodium to the water. Barwon Water reported full compliance with health guidelines in its latest reports, with typical pH levels between 7.2 and 7.8 and chlorine residuals maintained between 0.2 and 0.6 mg/L.