UK Water Quality Report • 2026 Data

Water Hardness in SN14

Water supply analysis across 4 postcode sectors in SN14 (Wessex Water).

Outcode Avg Hardness283.8 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode SN14

For residents and businesses in outcode SN14, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that SN14 averages 283.8 PPM in mineral content, falling into the Hard Water classification.

Water chemistry can fluctuate across supply zones in SN14. The lowest mineral concentration is recorded in sector SN14 8 at 265 PPM, whereas sector SN14 7 experiences higher mineral levels reaching 290 PPM.

Due to the hard water (283.8 PPM) in SN14, 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 SN14

Lowest mineral concentration

Softest
Sector SN14 8231 Postcodes • Hard
265 PPM18.6 °Clark

Hardest Sector in SN14

Highest mineral concentration

Highest Hardness
Sector SN14 7169 Postcodes • Hard
290 PPM20.3 °Clark

All Postcode Sectors in SN14

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