UK Water Quality Report • 2026 Data

Water Hardness in HR9

Water supply analysis across 4 postcode sectors in HR9 (Severn Trent / Hafren Dyfrdwy).

Outcode Avg Hardness150 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode HR9

For residents and businesses in outcode HR9, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that HR9 averages 150 PPM in mineral content, falling into the Moderately Hard Water classification.

Water chemistry can fluctuate across supply zones in HR9. The lowest mineral concentration is recorded in sector HR9 5 at 150 PPM, whereas sector HR9 9 experiences higher mineral levels reaching 150 PPM.

Due to the moderately hard water (150 PPM) in HR9, 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 H02) 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 HR9

Lowest mineral concentration

Softest
Sector HR9 5240 Postcodes • Moderately Hard
150 PPM10.5 °Clark

Hardest Sector in HR9

Highest mineral concentration

Highest Hardness
Sector HR9 99 Postcodes • Moderately Hard
150 PPM10.5 °Clark

All Postcode Sectors in HR9

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