Water Hardness Breakdown for Sector GU19 5
Serving the community across sector GU19 5, mains tap water is supplied by Affinity Water. Across the 175 postcodes within this distribution boundary, the baseline water hardness currently averages 285 PPM, falling into the very hard threshold.
Because water supplied by Affinity Water in GU19 5 contains 285 PPM of dissolved minerals, limescale accumulation is an active maintenance factor. Taps, thermostatic shower cartridges, and boiler coils require periodic descaling to prevent flow constriction.
Water distributed by Affinity Water in this southeastern/eastern catchment is predominantly drawn from underground chalk and limestone aquifers. As rainwater filters through deep subterranean chalk strata, it naturally dissolves high concentrations of calcium bicarbonate, resulting in the consistent 285 PPM profile recorded across sector GU19 5.
In everyday household use, calcium and magnesium ions in 285 PPM water bind with soaps, producing chalky bathroom residue and scum on your morning cuppa. In sector GU19 5, washing laundry or dishware requires +35% extra laundry detergent to overcome calcium neutralization. For personal grooming, individuals with dry skin or eczema sensitivity may experience skin tightness after showers in this very hard water environment.
Calibrating appliance water softening systems in GU19 5 prevents etched glassware and heating element burnouts. Based on Affinity Water's official 285 PPM rating, Bosch dishwashers should be set to H05. Consult the interactive equipment guide below for custom brand settings across all 175 postcodes.