UK Water Quality Report • 2026 Data

Water Hardness in RG25

Water supply analysis across 2 postcode sectors in RG25 (South East Water).

Outcode Avg Hardness275 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode RG25

For residents and businesses in outcode RG25, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that RG25 averages 275 PPM in mineral content, falling into the Hard Water classification.

Water chemistry can fluctuate across supply zones in RG25. The lowest mineral concentration is recorded in sector RG25 2 at 270 PPM, whereas sector RG25 3 experiences higher mineral levels reaching 280 PPM.

Due to the hard water (275 PPM) in RG25, 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 RG25

Lowest mineral concentration

Softest
Sector RG25 2229 Postcodes • Hard
270 PPM18.9 °Clark

Hardest Sector in RG25

Highest mineral concentration

Highest Hardness
Sector RG25 3166 Postcodes • Hard
280 PPM19.6 °Clark

All Postcode Sectors in RG25

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