Water Hardness Breakdown for Sector SY18 6
Water testing audits for postcode sector SY18 6 confirm a mean calcium carbonate concentration of 140 PPM, equivalent to 9.8° Clark or 14.0°fH. Sourced and treated by Hafren Dyfrdwy across 225 postcode delivery routes, water in this catchment is categorized as moderately hard.
With a balanced reading of 140 PPM (9.8° Clark), water in SY18 6 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%).
Supplies in this zone are managed through a composite blend of river abstraction points and upland reservoirs operated by Hafren Dyfrdwy. The mineral balance fluctuates moderately between seasons, averaging 140 PPM (9.8° Clark) across the 225 postal sectors in this supply matrix.
Household water chemistry in SY18 6 (9.8° Clark) dictates everyday cleaning efficiency. Water supplied by Hafren Dyfrdwy at this level necessitates medium detergent volume with routine machine descaling, while inline shower head filters can help sensitive skin by mitigating mineral residue during washing.
To preserve internal ion-exchange resin chambers, domestic dishwashers operating in sector SY18 6 should be calibrated precisely for 140 PPM. For Bosch, Neff, and Siemens appliances, the recommended salt dosing index is H01. Explore our interactive configuration tool below to verify exact settings for Beko, Miele, and Whirlpool units.