UK Water Quality Report • 2026 Data

Water Hardness in RG22

Water supply analysis across 3 postcode sectors in RG22 (South East Water).

Outcode Avg Hardness270 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode RG22

For residents and businesses in outcode RG22, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that RG22 averages 270 PPM in mineral content, falling into the Hard Water classification.

Water chemistry can fluctuate across supply zones in RG22. The lowest mineral concentration is recorded in sector RG22 4 at 270 PPM, whereas sector RG22 6 experiences higher mineral levels reaching 270 PPM.

Due to the hard water (270 PPM) in RG22, 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 RG22

Lowest mineral concentration

Softest
Sector RG22 4292 Postcodes • Hard
270 PPM18.9 °Clark

Hardest Sector in RG22

Highest mineral concentration

Highest Hardness
Sector RG22 6236 Postcodes • Hard
270 PPM18.9 °Clark

All Postcode Sectors in RG22

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