Melton South Water Hardness & Quality Report (2026)

Melton South's drinking water is supplied by City West Water as water retailer, with bulk supply from Melbourne Water incorporating a moderate Winneke Water Treatment Plant contribution for the Melton Shire Council LGA outer western Melbourne distribution in Victoria. Water hardness in Melton South is measured at 77.5 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Melton South, in the Melton Shire LGA — an outer western Melbourne suburb adjacent to the Melton town centre and the Western Ring Road, known for the Melton South industrial and commercial estate, the Melton Shire residential growth community, and the rapidly developing outer western Melbourne corridor of the Sunbury-Melton growth area — receives slightly elevated supply from the City West Water outer western Melton distribution, contrasting with the very soft City West Water inner Melbourne sub-zones (Sunshine North 20.5 mg/L, West Footscray 20.5 mg/L).

Melton South's slightly elevated hardness reflects a moderate Winneke Water Treatment Plant contribution at the outer western Melton Shire City West Water distribution sub-zone. The Winneke WTP draws from the Yarra River at Yering Gorge traversing Devonian basalt terrain — contributing moderate calcium. At 77.5 mg/L and TDS 163.2 mg/L, the Melton South outer western Melton distribution reflects a moderate Winneke proportion supplementing the very soft direct reservoir supply, producing slightly hard supply at this outer western Melbourne City West Water sub-zone — harder than the very soft inner City West Water sub-zones but considerably softer than the harder SA Water, QLD, or WA regional supplies.

Melton South 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. City West Water provides water quality information at citywestwater.com.au, with all ADWG health standards consistently met. Melton South's outer western Melbourne growth community benefits from a safe supply meeting all ADWG standards.