Evesham Water Hardness & Quality Report (2026)

Evesham, the Worcestershire market town in the Vale of Evesham on the River Avon renowned for its asparagus and market gardens, is served by Severn Trent Water. Supply to the Vale of Evesham draws on a combination of soft upland water from the Elan Valley Aqueduct (central Wales) and abstraction from the River Avon at Defford Water Treatment Works near Pershore. The Avon at Evesham carries water draining from south Warwickshire and the north Cotswold fringe — mixed geology of Triassic Mercia Mudstone, Lias Clay and minor Jurassic limestone — that yields moderately soft river water. The moderate TDS of 330.1 mg/L confirms a predominantly surface-water supply character with limited groundwater blending, closely resembling the supply profile of upstream Stratford-upon-Avon.

The River Avon in the Vale of Evesham drains a catchment combining the moderately soft Triassic Mercia Mudstone lowlands of south Warwickshire with the Lias Clay and Jurassic marlstone of the Cotswold edge to the east. This mixed catchment geology produces river water at 120–150 mg/L — harder than the pure Elan Valley upland supply but considerably softer than chalk-dominated rivers to the south and east. The Elan Valley supply fraction further moderates hardness in the distribution blend, producing the characteristic 140.5 mg/L hardness of the Evesham supply zone.

At 140.5 mg/L Evesham's water is moderately soft and limescale is a manageable household concern. Kettles need descaling roughly every six to eight weeks — a white vinegar or citric acid treatment removes any light mineral film. Shower screens develop only modest spotting over time and respond well to occasional cleaning. Washing-up liquid lathers adequately. Combi-boilers and white goods face low to moderate scaling risk. Evesham's extensive market gardens and asparagus production depend on the Avon's water, and the same river provides the town's domestic supply — soft, reliable and characteristic of the Worcestershire vale.