UK Water Quality Report • 2026 Data

Water Hardness in SO32

Water supply analysis across 3 postcode sectors in SO32 (Portsmouth Water).

Outcode Avg Hardness260 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode SO32

Looking for water hardness metrics in SO32? Water supplied by Portsmouth Water in this outcode registers a baseline average of 260 PPM across 3 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in SO32. The lowest mineral concentration is recorded in sector SO32 1 at 250 PPM, whereas sector SO32 2 experiences higher mineral levels reaching 280 PPM.

Due to the hard water (260 PPM) in SO32, 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 SO32

Lowest mineral concentration

Softest
Sector SO32 1250 Postcodes • Hard
250 PPM17.5 °Clark

Hardest Sector in SO32

Highest mineral concentration

Highest Hardness
Sector SO32 2329 Postcodes • Hard
280 PPM19.6 °Clark

All Postcode Sectors in SO32

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