Hove Water Hardness & Quality Report (2026)

Southern Water supplies mains water to Hove and surrounding areas in East Sussex, drawing primarily from the South Downs Chalk aquifer. This groundwater is abstracted from numerous boreholes within the South Downs catchment, an area defined by rolling chalk hills. Before reaching residents, the water undergoes treatment at facilities like the Falmer or Peacehaven works. The Cretaceous Chalk Group, a white limestone formation, allows rainwater to infiltrate deeply. As the water percolates through this permeable bedrock, it dissolves minerals, resulting in a naturally hard supply emerging from the abstraction points.

The water's hardness stems from its journey through the South Downs Chalk aquifer, a porous limestone formation dating back to the Upper Cretaceous period. This bedrock, rich in calcium carbonate, dissolves over geological timescales as rainwater percolates through it. The Chalk Group is known for producing hard water across the South East of England due to these extensive limestone deposits. The softness of the initial rainfall is entirely transformed by prolonged contact with these calcareous formations before it reaches the boreholes for abstraction.

This very hard water frequently causes significant limescale buildup in appliances like kettles and boilers, as well as hot water pipes, which can reduce their efficiency and lifespan. You'll often notice crusty deposits on showers and taps, and washing machines or dishwashers can suffer from clogged heating elements. Homeowners are advised to descale regularly using solutions like vinegar or citric acid, and keeping boiler temperatures below 60°C helps minimize scum. For households, installing a water softener is strongly recommended to combat scaling and extend the life of appliances. The water generally has a pH between 7.5-8.0, and Southern Water adheres to UK standards for quality, including compliance with Drinking Water Inspectorate regulations on lead and copper levels.