Water Quality Breakdown: Sector CM1 1
According to the latest public disclosures from Essex and Suffolk Water, tap water across postcode sector CM1 1 (outcode CM1) registers an average mineral concentration of 320 PPM (mg/L), which translates to 22.4° Clark on the English hardness scale. This water supply is officially classified as Very Hard.
With a elevated mineral density of 320 PPM, sector CM1 1 experiences rapid limescale accumulation on heating elements. Unchecked calcium deposits can reduce boiler heat transfer efficiency by up to 20%+, leading to increased household heating bills over time. Shower heads, kettles, and tap aerators in CM1 1 will require periodic descaling using citric acid or specialized descaling tablets.
To protect your dishwasher's internal ion-exchange resin in CM1 1, manual water softener calibration is required. For Bosch and Siemens dishwashers, the manufacturer-recommended salt setting for 320 PPM is H07 (Max Salt). Filling the salt reservoir ensures calcium ions are neutralized before heating, preventing cloudy glass film and white spot residue on washed dishes.
Hard minerals interact with fatty acids in soaps, creating insoluble soap scum. In CM1 1, washing with 320 PPM water requires approximately +50% extra detergent or shampoo to achieve a full lather compared to soft water zones. Furthermore, residents prone to sensitive skin, eczema, or dry hair may benefit from installing an inline shower filter to reduce mineral friction during washing.
Overall, water quality in sector CM1 1 reflects Essex and Suffolk Water's regional catchment chemistry. Use our interactive setup tool below to view exact brand-by-brand dishwasher settings and recommended limescale protection products for your home.