Sandringham Water Hardness & Quality Report (2026)

Sandringham's drinking water is supplied by South East Water as water retailer, with bulk supply from Melbourne Water incorporating a low-to-moderate Winneke Water Treatment Plant contribution for the Bayside City Council LGA inner southern Melbourne bayside distribution in Victoria. Water hardness in Sandringham is measured at 80 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Sandringham — a prestigious inner southern Melbourne bayside suburb in the Bayside City LGA, renowned for the Sandringham Beach and foreshore gardens, the Sandringham Yacht Club and Port Phillip Bay sailing community, the historic Sandringham Village and Hampton Street café precinct, and the Heritage Bay Trail clifftop coastal walk — receives slightly elevated supply from the Bayside City South East Water distribution, reflecting a moderate Winneke WTP contribution at this bayside sub-zone.

Sandringham's slightly elevated hardness reflects a low-to-moderate Winneke Water Treatment Plant contribution at the inner southern Bayside City South East Water sub-zone. The Winneke WTP draws from the Yarra River at Yering Gorge traversing Devonian basalt terrain — contributing moderate calcium. At 80 mg/L and TDS 169.8 mg/L, Sandringham is slightly elevated within the typical inner southern Melbourne South East Water range — harder than the very soft Elsternwick Glen Eira sub-zone (32 mg/L) in the same supply area, reflecting a moderate Winneke WTP blend proportion at the Bayside Sandringham distribution sub-zone.

Sandringham residents can expect occasional light 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. South East Water provides water quality information at southeastwater.com.au, with all ADWG health standards consistently met. Sandringham's Port Phillip Bay foreshore community and the Sandringham Yacht Club benefit from a safe supply meeting all ADWG standards.