UK Water Quality Report • 2026 Data

Water Hardness in RG19

Water supply analysis across 5 postcode sectors in RG19 (Thames Water).

Outcode Avg Hardness276 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode RG19

For residents and businesses in outcode RG19, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that RG19 averages 276 PPM in mineral content, falling into the Hard Water classification.

Water chemistry can fluctuate across supply zones in RG19. The lowest mineral concentration is recorded in sector RG19 3 at 275 PPM, whereas sector RG19 8 experiences higher mineral levels reaching 280 PPM.

Due to the hard water (276 PPM) in RG19, 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 RG19

Lowest mineral concentration

Softest
Sector RG19 3144 Postcodes • Hard
275 PPM19.3 °Clark

Hardest Sector in RG19

Highest mineral concentration

Highest Hardness
Sector RG19 8151 Postcodes • Hard
280 PPM19.6 °Clark

All Postcode Sectors in RG19

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