Water Hardness Breakdown for Sector CM23 1
Covering 136 active delivery postcodes in the CM23 district, households and businesses in sector CM23 1 are supplied with tap water averaging 290 PPM (20.3° Clark). Distributed under the regulatory oversight of Affinity Water, local tap water supplies in this catchment are rated as hard.
Registering 290 PPM, tap water across CM23 1's 136 postcodes carries significant calcium concentrations. Uninhibited hot water use accelerates limescale deposits on heating elements, potentially causing a 10% – 15% loss in boiler heat transfer efficiency over prolonged operating cycles.
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 290 PPM profile recorded across sector CM23 1.
In everyday household use, calcium and magnesium ions in 290 PPM water bind with soaps, producing chalky bathroom residue and scum on your morning cuppa. In sector CM23 1, 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 hard water environment.
Calibrating appliance water softening systems in CM23 1 prevents etched glassware and heating element burnouts. Based on Affinity Water's official 290 PPM rating, Bosch dishwashers should be set to H04. Consult the interactive equipment guide below for custom brand settings across all 136 postcodes.