UK Water Quality Report • 2026 Data

Water Hardness in RG41

Water supply analysis across 5 postcode sectors in RG41 (South East Water).

Outcode Avg Hardness271 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode RG41

Looking for water hardness metrics in RG41? Water supplied by South East Water in this outcode registers a baseline average of 271 PPM across 5 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in RG41. The lowest mineral concentration is recorded in sector RG41 1 at 270 PPM, whereas sector RG41 5 experiences higher mineral levels reaching 275 PPM.

Due to the hard water (271 PPM) in RG41, 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 RG41

Lowest mineral concentration

Softest
Sector RG41 1134 Postcodes • Hard
270 PPM18.9 °Clark

Hardest Sector in RG41

Highest mineral concentration

Highest Hardness
Sector RG41 5248 Postcodes • Hard
275 PPM19.3 °Clark

All Postcode Sectors in RG41

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