Inverness Water Hardness & Quality Report (2026)

Scottish Water provides the public water supply for Inverness in the Highland Council area, serving more than 100,000 residents. The primary sources are surface waters drawn from Loch Ness and the River Ness catchment. Additional supply comes from smaller reservoirs, including Loch Uaine and Loch Mhor. Water undergoes treatment at the Inverness Water Treatment Works (Northern Plant), where processes include coagulation, filtration, chlorine disinfection, and pH adjustment. Scottish Water conducts thorough monitoring under the direction of the Drinking Water Quality Regulator for Scotland (DWQR).

The Ness River watershed, which lies within the Great Glen, features granitic intrusions and schists belonging to the Moine Supergroup from the Proterozoic era. Due to the lack of significant limestone formations, the peaty, acidic soils in the region lead to very soft water with minimal dissolved calcium and magnesium. This geology, characterized by resistant igneous and metamorphic rocks, prevents the ion uptake commonly seen in areas with chalk deposits, resulting in a naturally soft water profile.

The naturally soft water supply means Inverness residents won't encounter limescale buildup in appliances like kettles or boilers, and pipes are less prone to deposits. Homeowners can expect longer appliance lifespans with reduced maintenance needs, and soap will lather more easily, requiring less product. The gentle water chemistry is also beneficial for skin and hair, avoiding the dryness often associated with harder water. Consequently, a water softener is unnecessary, as the inherent softness of the supply eliminates scaling risks. The water quality consistently surpasses DWQR standards, with typical pH levels between 7.0 and 7.5, and full compliance for lead and copper.