Water Supply Analysis: Outcode PO21
Analyzing water quality disclosures across all 6 postcode sectors in outcode PO21 reveals an average water hardness of 250 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 PO21. The lowest mineral concentration is recorded in sector PO21 1 at 250 PPM, whereas sector PO21 9 experiences higher mineral levels reaching 250 PPM.
Due to the hard water (250 PPM) in PO21, 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.