Brownhills Water Hardness & Quality Report (2026)

South Staffordshire Water supplies Brownhills, a former coal, limestone, and mineral extraction town in the Metropolitan Borough of Walsall on the edge of Cannock Chase — historically significant for Limestone, clay, and coal extraction from the South Staffordshire Coalfield — from Permo-Triassic Sandstone groundwater and the Elan Valley aqueduct blend in the Cannock Chase supply zone, treated at Blithbury Water Treatment Works near Rugeley. At 239 mg/L (16.8°Clark) and a TDS of 715.4 mg/L, Brownhills's water is hard with a notably elevated TDS/hardness ratio (3.0), indicating significant non-carbonate mineral content from Triassic Keuper Marl gypsum dissolution beneath Cannock Chase.

Brownhills sits on the South Staffordshire Coalfield and the margins of Cannock Chase — an area underlain by Triassic Mercia Mudstone (Keuper Marl) with gypsum (calcium sulphate) veins and lenticles that dissolve into groundwater, contributing elevated sulphate hardness in addition to the calcium carbonate hardness from the Triassic Sherwood Sandstone aquifer. South Staffordshire Water's Cannock Chase supply zone draws on this Triassic groundwater, producing 239 mg/L with TDS 715.4 mg/L — a hard supply with a distinctive sulphate-type hardness character unusual in most English water supply zones.

At 239 mg/L, limescale is a persistent and significant household challenge in Brownhills. Kettles should be descaled monthly to maintain element efficiency. The combi-boiler needs a fitted scale inhibitor and annual professional servicing. Washing-up liquid requires more product per wash than in softer areas. Taps and shower heads develop visible white limescale deposits within one to two weeks; a fortnightly wipe with white vinegar or a proprietary descaling product keeps fittings clean and prevents chalk staining from building up permanently in this hard south Staffordshire Triassic gypsum-influence supply zone.