Galashiels Water Hardness & Quality Report (2026)

Scottish Water supplies Galashiels, the principal town of the Scottish Borders on the Gala Water above the River Tweed — a town synonymous with the high-quality Border Tweed and cashmere textile industry, with a long tradition of wool milling on the Gala Water, the Scottish Textiles heritage on show at the Galashiels Museum, and the southern terminus of the re-opened Borders Railway that restored the Edinburgh–Galashiels rail link in 2015 — from Fruid Reservoir and Talla Reservoir in the Tweeddale upland above Peebles, treated at Glentress Water Treatment Works in the Tweed valley. At 76.5 mg/L (5.4°Clark), Galashiels' water is soft — consistent with the impermeable Silurian greywacke and mudstone of the Southern Uplands that yields very little calcium to the Tweeddale reservoir catchments.

Galashiels draws supply from the Fruid and Talla reservoirs in the Southern Uplands — a landscape of Silurian greywacke, mudstone, and sandstone (Moffat Shales and Gala Group) with moorland peat yielding low-mineralisation water. The result is 76.5 mg/L with TDS 173.6 mg/L — soft water with a moderate TDS/hardness ratio (2.27) characteristic of the Scottish Water Borders Tweeddale distribution zone at Peebles (73 mg/L) and Selkirk in the same Southern Uplands reservoir supply corridor.

At 76.5 mg/L, limescale is a moderate and manageable domestic concern in Galashiels. Descaling the kettle every two to three months is typically adequate. The combi-boiler has low scaling risk. Washing-up liquid lathers readily with modest quantities. Taps and shower heads develop light deposits; a quarterly wipe with white vinegar keeps fixtures clean. Galashiels' soft supply reflects the Southern Uplands character of the Borders — the same ancient Silurian greywacke hills that made the Gala Water fast-flowing and pure enough for wool-milling also delivering clean, soft water to the households of the Borders textile capital.