Executive Summary: Sector B1 1 vs Sector M1 1
Comparing tap water mineral concentration between Sector B1 1 (Severn Trent Water) and Sector M1 1 (United Utilities) reveals a water hardness difference of 3 PPM. Sector B1 1 has softer water at 42 PPM (Soft) compared to Sector M1 1 at 45 PPM (Soft).
Limescale risk and boiler heating efficiency vary based on these mineral levels. Households in Sector M1 1 experience higher heating element degradation and kettle scale accumulation due to elevated calcium carbonate density (45 PPM vs 42 PPM).
For home appliance setup, Bosch dishwasher water softener settings should be calibrated accordingly: Sector B1 1 requires setting H00 (No Salt Required) whereas Sector M1 1 recommends setting H00 (No Salt Required).