UK Water Quality Report • 2026 Data

Water Hardness in RH3

Water supply analysis across 1 postcode sectors in RH3 (SES Water).

Outcode Avg Hardness260 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode RH3

For residents and businesses in outcode RH3, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that RH3 averages 260 PPM in mineral content, falling into the Hard Water classification.

Water chemistry can fluctuate across supply zones in RH3. The lowest mineral concentration is recorded in sector RH3 7 at 260 PPM, whereas sector RH3 7 experiences higher mineral levels reaching 260 PPM.

Due to the hard water (260 PPM) in RH3, 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 RH3

Lowest mineral concentration

Softest
Sector RH3 7145 Postcodes • Hard
260 PPM18.2 °Clark

Hardest Sector in RH3

Highest mineral concentration

Highest Hardness
Sector RH3 7145 Postcodes • Hard
260 PPM18.2 °Clark

All Postcode Sectors in RH3

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