Bloxwich Water Hardness & Quality Report (2026)

Bloxwich, in the north of the Metropolitan Borough of Walsall in the West Midlands, is supplied by Severn Trent Water from the Elan Valley Reservoir system via the West Midlands Aqueduct supplemented by Triassic Sherwood Sandstone groundwater from licensed boreholes in the Walsall area. The Elan Valley supply dominates the west Birmingham and Black Country network with very soft water from the mid-Wales uplands, but Bloxwich's north Walsall position draws a higher Triassic sandstone groundwater proportion than softer west Midlands zones such as Willenhall (98.5 mg/L). The Triassic Sherwood Sandstone aquifer of the West Midlands urban area contributes moderately hard groundwater with elevated calcium and sulphate. This produces a moderately soft supply for Bloxwich, intermediate between the very soft pure Elan Valley zones and the harder Black Country sandstone zones like Tipton (202.5 mg/L).

Bloxwich's hardness of 141.5 mg/L (9.9°Clark) reflects the blend of soft Elan Valley supply and moderate Triassic sandstone groundwater in the north Walsall Severn Trent supply zone. The Drinking Water Inspectorate (DWI) classifies this supply as moderately soft.

Limescale is a moderate concern in Bloxwich. At 141.5 mg/L, limescale forms gradually in kettles and descaling every one to two months is typically sufficient. Combi-boiler heat exchangers accumulate modest deposits; annual servicing is sensible. Showerheads and taps develop light deposits. Washing-up liquid lathers reasonably well. A monthly Calgon tablet in the washing machine and a regular kettle descale is adequate limescale management for most Bloxwich households.