Ilkeston Water Hardness & Quality Report (2026)

Severn Trent Water provides water to Ilkeston, Derbyshire, in the East Midlands of the UK. Their supply originates from a blend of sources, including groundwater boreholes that tap into Permian and Triassic aquifers. Surface water from the River Derwent and Derwent Valley reservoirs, such as Ladybower and Howden, also contributes. Treatment occurs at facilities like the Derwent Valley Water Treatment Works. The watershed stretches across the Pennine uplands and Peak District, feeding the Derwent Valley system. Groundwater is drawn from the Sherwood Sandstone and limestone aquifers found beneath the East Midlands.

The underlying geology consists mainly of Triassic sandstones and Permian Magnesian Limestone. As water travels through the porous rock and fissures, it dissolves minerals like calcium and magnesium carbonates, a process that significantly hardens the supply. While upland surface sources can be softer, the groundwater extracted from these sedimentary formations is particularly mineral-rich. This geological makeup results in a moderately mineralised to hard water chemistry for Ilkeston residents.

Homeowners in areas with moderately hard to hard water often notice limescale buildup in appliances like kettles and boilers, which can reduce their efficiency and lifespan. You might also find that dishwashers and washing machines require more detergent and energy to achieve the same cleaning results. Regular descaling with common household items like vinegar or citric acid can help manage these deposits. For persistent scale issues, installing a water softener is frequently recommended to protect heating systems and improve how effectively soap lathers form. Severn Trent Water ensures water quality meets UK Drinking Water Inspectorate standards.