Bedworth Water Hardness & Quality Report (2026)

Bedworth, the north Warwickshire town between Coventry and Nuneaton in the Nuneaton and Bedworth Borough, is served by Severn Trent Water. Supply to north Warwickshire combines soft upland water delivered via the Elan Valley Aqueduct from central Wales, treated at Coventry Water Treatment Works, with significant local groundwater abstraction from Triassic sandstone and Jurassic limestone aquifers beneath the north Warwickshire and south Leicestershire belt. The blend produces consistently hard water, and the high TDS of 536.9 mg/L for a hardness of 201 mg/L suggests a substantial groundwater component carrying sulphate and sodium from the underlying Triassic evaporite sequence — a characteristic of the north Coventry–Nuneaton supply zone.

The Permo-Triassic sandstone beneath north Warwickshire passes eastward into the Jurassic limestone country of the south Midlands, where Blue Lias and Oolitic Limestone formations contribute significant calcium and magnesium bicarbonate to groundwater. Severn Trent's distribution network for Bedworth draws on both: the Triassic sandstone provides sulphate-rich, moderately hard groundwater, while Jurassic limestone contributes calcium carbonate hardness. The interaction between the Elan Valley soft-water supply fraction and these mineralised local groundwater sources produces the characteristic 200 mg/L hard-water blend that Bedworth shares with nearby Nuneaton and parts of east Coventry.

At 201 mg/L Bedworth's water is hard and limescale management is a routine part of household maintenance. Kettles require descaling every three to four weeks — leaving a solution of citric acid or diluted white vinegar in a boiled kettle for an hour will dissolve the white mineral layer effectively. Shower heads and tap aerators need monthly attention to prevent blocked jets. Washing-up liquid needs to be used generously to maintain lather in hard-water conditions. Fitting an inline magnetic scale inhibitor before combi-boilers and washing machines is strongly recommended. Bedworth residents along older terrace housing rows may particularly benefit from periodic checks of plumbing connections for scale-related narrowing.