UK Water Quality Report • 2026 Data

Water Hardness in PO14

Water supply analysis across 5 postcode sectors in PO14 (Portsmouth Water).

Outcode Avg Hardness256 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode PO14

Looking for water hardness metrics in PO14? Water supplied by Portsmouth Water in this outcode registers a baseline average of 256 PPM across 5 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in PO14. The lowest mineral concentration is recorded in sector PO14 1 at 250 PPM, whereas sector PO14 4 experiences higher mineral levels reaching 280 PPM.

Due to the hard water (256 PPM) in PO14, 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.

Softest Sector in PO14

Lowest mineral concentration

Softest
Sector PO14 1242 Postcodes • Hard
250 PPM17.5 °Clark

Hardest Sector in PO14

Highest mineral concentration

Highest Hardness
Sector PO14 4248 Postcodes • Hard
280 PPM19.6 °Clark

All Postcode Sectors in PO14

Select a postcode sector below to view exact water softener salt settings, limescale protection guides, and appliance recommendations.