Forster Water Hardness & Quality Report (2026)

Forster's drinking water is supplied by MidCoast Council Water, drawing from the Wallingat River catchment and the Wallis Lake coastal estuary-adjacent water supply system for the Mid-Coast Council LGA in New South Wales' Mid North Coast region. Water hardness in Forster is measured at 163 mg/L — classified as moderately hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Forster — the twin towns of Forster-Tuncurry at the Wallis Lake entrance to the Pacific Ocean, one of the mid-north coast's premier coastal lifestyle and retirement destinations known for the Nine Mile Beach surf coast, the Forster Town Beach, the Great Lakes region, and the Booti Booti National Park — carries a moderately hard supply from the local Mid North Coast catchment system.

Forster's elevated hardness reflects the moderately mineralised character of the Wallingat River catchment and Wallis Lake coastal plain geology. The Wallingat River drains from the Gloucester Plateau transitional terrain — incorporating Permian–Triassic sedimentary formations and coastal plain alluvial deposits where calcium carbonate and associated minerals accumulate moderately. The Forster Mid North Coast distribution at 163 mg/L and TDS 364.6 mg/L reflects this coastal plain catchment character, with hardness levels consistent with MidCoast Council's broader water supply zone.

Forster residents face moderate to heavy limescale build-up on taps and in kettles — descaling every two to three weeks is typical. Hot water systems benefit from annual inspection. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use in older Forster holiday homes and retirement properties. MidCoast Council provides water quality information online, with all ADWG health standards consistently met. The Forster-Tuncurry coastal lifestyle and Great Lakes tourist community benefits from a supply meeting all ADWG safe drinking standards.