Whitchurch Water Hardness & Quality Report (2026)

Hafren Dyfrdwy (the Dee and Severn water company, now a Severn Trent subsidiary) supplies Whitchurch, the north Shropshire market town on the Cheshire Plain — a pleasant market town with a handsome town centre, the largest medieval church in Shropshire (St Alkmund's), and a setting at the junction of the flat Cheshire–Shropshire agricultural plain — from Llyn Vyrnwy reservoir in the Vyrnwy Valley of Powys via the aqueduct, treated at Vyrnwy Water Treatment Works. At 79.5 mg/L (5.6°Clark), Whitchurch's water is soft — consistent with the impermeable Silurian and Ordovician rock upland of the Vyrnwy catchment in mid-Wales that contributes very little calcium to the reservoir supply.

Whitchurch lies in the flat Cheshire Plain where Hafren Dyfrdwy delivers Llyn Vyrnwy reservoir supply — soft upland water from the Silurian/Ordovician mid-Wales catchment. The soft Vyrnwy reservoir supply produces 79.5 mg/L with TDS 181.2 mg/L — soft water with a moderate TDS/hardness ratio (2.28) predominantly from chalk carbonate, consistent with the Hafren Dyfrdwy north Shropshire distribution zone at Market Drayton (80 mg/L) and Wem in the same Vyrnwy supply corridor.

At 79.5 mg/L, limescale is a moderate and manageable domestic concern in Whitchurch. Descaling the kettle every two to three months is typically adequate. The combi-boiler has low scaling risk. Washing-up liquid lathers readily with modest quantities. Taps and shower heads develop light deposits over several months; a quarterly wipe with white vinegar or a proprietary descaling product is sufficient. Whitchurch's soft Vyrnwy supply is characteristic of the north Shropshire plain — the great Llyn Vyrnwy reservoir, built in 1881 as one of England and Wales's first large gathering grounds, continuing to deliver clean, soft mid-Wales upland water to north Shropshire households and the town that St Alkmund built.