Water Supply Analysis: Outcode BN18
Analyzing water quality disclosures across all 3 postcode sectors in outcode BN18 reveals an average water hardness of 270 PPM (Hard Water). Public water supply across this area is managed by Portsmouth Water, responsible for treating and delivering water to residential households.
Water chemistry can fluctuate across supply zones in BN18. The lowest mineral concentration is recorded in sector BN18 0 at 250 PPM, whereas sector BN18 9 experiences higher mineral levels reaching 280 PPM.
Due to the hard water (270 PPM) in BN18, limescale build-up can occur on heating elements, shower heads, and boilers. Setting your dishwasher water softener to the correct level (e.g. Bosch setting H04) is strongly recommended to prevent cloudy glassware and internal scale accumulation. Review the individual postcode sectors below to get precise dishwasher salt settings and limescale recommendations.