Port Kennedy Water Hardness & Quality Report (2026)

The Water Corporation is the main provider of water, wastewater, and drainage services for more than 2 million people across Perth and Western Australia. For residents of Port Kennedy, located in the East Rockingham region, the specific reservoirs, rivers, or aquifers supplying your tap, along with details about treatment plants, are not specified in the available information. While there's discussion about a potential second desalination plant in Port Kennedy/East Rockingham, suggesting a possible future reliance on treated seawater, the current sources for your water remain unclear. The utility's service area encompasses the Perth metropolitan area and surrounding districts.

The water supplied to Port Kennedy comes from the Integrated Water Supply Scheme, drawing significantly from the Gnangara Mound and local Tamala Limestone groundwater. This high proportion of groundwater contributes to the water being very hard, with extremely high total dissolved solids (TDS). This geological makeup means the water is considerably harder than supplies in adjacent areas like Rockingham, reflecting the distinct coastal distribution characteristics influenced by the groundwater sources.

Homeowners in Port Kennedy might notice scale buildup on appliances such as kettles, water heaters, dishwashers, and washing machines. Regular cleaning of these items is a good practice to prevent issues. Depending on your specific water hardness, which is known to be high in this area, installing a water softener could be a worthwhile consideration to protect your plumbing and improve soap and detergent efficiency. For personalized advice or to report any concerns, you can contact the Water Corporation directly at 13 13 75.