Water Hardness Breakdown for Sector JE3 4
Covering 77 active delivery postcodes in the JE3 district, households and businesses in sector JE3 4 are supplied with tap water averaging 160 PPM (11.2° Clark). Distributed under the regulatory oversight of Jersey Water, local tap water supplies in this catchment are rated as slightly hard.
With a balanced reading of 160 PPM (11.2° Clark), water in JE3 4 exhibits a moderate mineral structure. While limescale accumulation is gradual, minor scale rings can form inside kettles and on boiler heat exchangers over 6–12 month periods (estimated thermal efficiency drag of 4% – 7%).
The water supply managed by Jersey Water in this region is primarily abstracted from upland reservoirs, lakes, and moorland catchments with impermeable granite or sandstone geology. This geological pathway limits mineral leaching, maintaining a low-to-moderate hardness baseline of 160 PPM throughout JE3 4.
In everyday household use, calcium and magnesium ions in 160 PPM water bind with soaps, producing chalky bathroom residue and scum on your morning cuppa. In sector JE3 4, washing laundry or dishware requires medium detergent volume with routine machine descaling. For personal grooming, individuals with dry skin or eczema sensitivity may experience skin tightness after showers in this slightly hard water environment.
Calibrating appliance water softening systems in JE3 4 prevents etched glassware and heating element burnouts. Based on Jersey Water's official 160 PPM rating, Bosch dishwashers should be set to H02. Consult the interactive equipment guide below for custom brand settings across all 77 postcodes.