Streetly Water Hardness & Quality Report (2026)

South Staffordshire Water supplies Streetly, drawing from a mixed network of groundwater and surface water. The utility taps into Triassic sandstone aquifers and various rivers and reservoirs within the Tame Valley and Trent catchment areas. Water is treated at facilities like the one near Winshill, ensuring it meets stringent drinking water standards before reaching the approximately 1.4 million people served across the Black Country and surrounding districts.

The region's water originates from the Sherwood Sandstone Group, a productive confined aquifer formed during the Triassic period. These red sandstones and conglomerates are rich in calcium and magnesium minerals. As groundwater percolates through the rock's fractures and pore spaces over long periods, it dissolves these minerals, contributing to the water's naturally hard character. Surface water sources can introduce some variability, influenced by local clay and marl layers.

This mineral-rich water often leads to limescale buildup in household appliances such as kettles, boilers, and showerheads, which can reduce their efficiency and shorten their lifespan. Washing machines and dishwashers are also susceptible to visible deposits. Homeowners can manage this by regularly descaling with vinegar or citric acid, installing tap filters, and wiping down surfaces after use. For persistent issues, a water softener is frequently recommended to protect heating systems and improve how soap lathers. The water's pH is typically around 7.4, and while it meets UK standards, treatment processes like filtration and aeration manage elements like iron and manganese.