Codsall Water Hardness & Quality Report (2026)

South Staffs Water supplies Codsall, a large village west of Wolverhampton in Staffordshire — a pleasant semi-rural community at the Staffordshire–Shropshire fringe with Codsall Wood nature reserve and a well-regarded village centre, popular as a commuter settlement for Wolverhampton professionals — from the Elan Valley aqueduct (Welsh upland reservoir supply) blended with Permo-Triassic Sandstone (Sherwood Sandstone) groundwater in the south Staffordshire supply zone, treated at Seisdon Water Treatment Works near Perton. At 130 mg/L (9.1°Clark), Codsall's water is slightly hard — reflecting a moderate Triassic Sandstone groundwater contribution to the soft Elan Valley aqueduct baseline in the west Staffordshire distribution sub-zone.

Codsall lies in the south Staffordshire lowland where the Permo-Triassic Sandstone (Bunter Pebble Beds and Sherwood Sandstone) provides a productive though moderately mineralised groundwater aquifer. South Staffs Water blends the very soft Elan Valley Welsh upland aqueduct supply with a Triassic Sandstone borehole fraction, producing 130 mg/L with TDS 315.1 mg/L — slightly hard water consistent with the west Staffordshire fringe communities from Perton through Codsall to Brewood in the same South Staffs Water west Staffordshire supply zone.

At 130 mg/L, limescale is a moderate and manageable domestic concern in Codsall. Descaling the kettle every six to eight weeks is typically adequate. The combi-boiler benefits from a standard scale inhibitor as a precaution. Washing-up liquid lathers adequately at everyday quantities. Taps and shower heads develop moderate deposits over several weeks; a monthly wipe with white vinegar or a proprietary descaling product is adequate to keep fittings in good condition. The slightly hard west Staffordshire supply at Codsall is comfortable domestic water — appreciably softer than the hard Triassic zone communities further east toward Cannock and Lichfield.