Ryton Water Hardness & Quality Report (2026)

Severn Trent Water supplies Ryton in south-east Shropshire in the Severn tributary country south of Bridgnorth, from the River Severn catchment abstraction blended with Permo-Triassic Sandstone and Keuper Marl groundwater from the Midland red-bed basin, treated at regional Shropshire works. At 220.5 mg/L (15.5°Clark), Ryton's water is hard — notably harder than expected for rural Shropshire — reflecting the significant groundwater contribution from the Triassic Mercia Mudstone and Sherwood Sandstone that underlie the Shropshire basin east of the Severn gorge and dissolve moderate to high calcium from their interstitial carbonate cements and evaporite mineral content.

The Triassic Mercia Mudstone (Keuper Marl) of the west Midlands basin contains gypsum (calcium sulphate) and calcium carbonate cements within the ancient red desert sediments. Groundwater percolating through these Triassic formations acquires elevated calcium and sulphate concentrations, producing harder water than the surface water draining the Silurian and Ordovician uplands to the west. The blend of River Severn surface water — itself modestly hard from Jurassic limestone tributaries in the upper Severn Vale — and Triassic groundwater produces the hard 220.5 mg/L supply, with TDS 652.2 mg/L confirming significant sulphate and calcium from the red-bed evaporite component.

At 220.5 mg/L, limescale is a consistent domestic concern in Ryton. Kettles should be descaled monthly to maintain element efficiency. The combi-boiler benefits from a fitted scale inhibitor and annual servicing. Washing-up liquid requires more product than in softer areas. Taps and shower heads develop visible white limescale within one to two weeks; a fortnightly wipe with white vinegar or a proprietary descaling solution keeps fittings clean in this hard Triassic-influenced Shropshire supply zone.