Beaumaris Water Hardness & Quality Report (2026)

Beaumaris' drinking water is supplied by South East Water as water retailer, with bulk supply from Melbourne Water incorporating a moderate Winneke Water Treatment Plant contribution for the Bayside City LGA inner southern coastal Melbourne distribution in Victoria. Water hardness in Beaumaris is measured at 90 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Beaumaris, in the Bayside City LGA — an affluent inner southern Melbourne coastal suburb overlooking Port Phillip Bay, known for the Beaumaris Beach and the rocky cliff foreshore reserve, the iconic Beaumaris shops on Bay Road, and quality residential estates of Modernist and post-war architecture — receives slightly elevated supply harder than Brighton East (68.5 mg/L) in the same Bayside City LGA, reflecting a higher Winneke WTP fraction at this southern coastal distribution sub-zone.

Beaumaris' slightly elevated hardness reflects a moderate Winneke Water Treatment Plant contribution at the inner southern Bayside City coastal distribution sub-zone. The Winneke plant draws from the Yarra River at Yering Gorge traversing Devonian basalt terrain — contributing moderate calcium relative to the soft Yarra Ranges direct reservoir supply. The Beaumaris inner southern Bayside City coastal distribution at 90 mg/L and TDS 197.3 mg/L receives a proportionally higher Winneke WTP fraction than the softer Brighton East sub-zone, reflecting the variation in South East Water's inner southern Melbourne Bayside coastal distribution network.

Beaumaris residents can expect occasional moderate limescale on taps and in kettles — descaling every two to three months is typically adequate. Hot water systems benefit from periodic inspection. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use in Beaumaris' heritage Modernist homes and beachside properties. South East Water provides water quality information at southeastwater.com.au, with all ADWG health standards consistently met. Beaumaris' prestigious coastal community benefits from a supply meeting all ADWG standards.