Tamworth Water Hardness & Quality Report (2026)

Tamworth, the historic town in Staffordshire at the confluence of the rivers Tame and Anker, is supplied by Severn Trent Water drawing from the River Tame catchment and groundwater from the Triassic Sherwood Sandstone (Bunter Sandstone) and Mercia Mudstone aquifers beneath north Staffordshire. The Tame valley, which forms the supply corridor from the Birmingham plateau through north Staffordshire, carries a blend of West Midlands conurbation effluent-influenced and industrial catchment water. The local Triassic sandstone aquifer beneath Tamworth and the Trent valley adds groundwater with elevated calcium and sulphate content from mineralised sandstone and evaporite mineral dissolution. Water is treated at Severn Trent's Staffordshire facilities before distribution to Tamworth and the north Staffordshire Trent valley.

Tamworth's hardness of 238 mg/L (16.7°Clark) reflects the Triassic Sherwood Sandstone and Mercia Mudstone groundwater contribution in the Staffordshire Trent valley. The Triassic geology beneath north Staffordshire is a red-bed sequence of Permo-Triassic sandstones and mudstones deposited in arid continental conditions, and groundwater in the sandstone matrix acquires dissolved calcium, sulphate, and magnesium from mudstone and evaporite mineral dissolution. This produces harder water than the Elan Valley supply alone would suggest. The River Tame itself carries accumulated mineral content from the Black Country and Birmingham catchment, adding further dissolved hardness. The Drinking Water Inspectorate (DWI) classifies this supply as hard.

Limescale is a persistent household challenge in Tamworth. At 238 mg/L, limescale forms in kettles within two to three weeks and fortnightly or monthly descaling is advisable. Combi-boiler heat exchangers accumulate deposits steadily — annual boiler servicing with a limescale check is essential, and an in-line scale inhibitor is strongly recommended. Showerheads, taps, and shower screens develop regular deposits. Washing-up liquid lathers moderately. Using Calgon monthly in the washing machine and maintaining a regular descaling routine is important limescale management practice for Tamworth households.