Forfar Water Hardness & Quality Report (2026)

Scottish Water supplies Forfar, the county town of Angus in the Strathmore valley — a market town with a lively high street, a traditional bridie pastry tradition, and medieval church heritage — from Loch of Lintrathen in the Angus Glens above Kirriemuir, treated at Lintrathen Water Treatment Works. At 85.5 mg/L (6.0°Clark), Forfar's water is soft, reflecting the upland Dalradian Metasediment and Grampian Schist catchment of the Lintrathen basin that drains the Braes of Angus into the Strathmore valley.

Loch of Lintrathen occupies a glacially deepened valley in the foothills of the Grampian Mountains above Kirriemuir, draining the Dalradian mica-schist and quartzite uplands of the Braes of Angus. These ancient metamorphic rocks are impermeable and calcium-poor, producing soft catchment water that carries modest mineralisation from limited glacial drift and till deposits in the valley floors. The resulting 85.5 mg/L with TDS 201.4 mg/L is characteristic of an upland Scottish reservoir supply with a slight till-mineral increment above the pure metamorphic rock baseline — consistent with the gently productive Angus Glens catchment character.

At 85.5 mg/L, Forfar's soft water is comfortable for domestic use with minimal limescale demands. Descaling the kettle every two to three months is typically adequate. The combi-boiler benefits from a standard scale inhibitor as a sensible precaution. Washing-up liquid lathers well at everyday quantities. Taps and shower heads remain relatively scale-free with only occasional maintenance. In older properties with lead pipework, residents should briefly run the cold tap before drinking, as soft water can be mildly corrosive to metal plumbing — standard Scottish Water guidance throughout the soft upland Angus Glens supply zone.