UK Water Quality Report • 2026 Data

Water Hardness in HR4

Water supply analysis across 4 postcode sectors in HR4 (Severn Trent / Hafren Dyfrdwy).

Outcode Avg Hardness150 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode HR4

Looking for water hardness metrics in HR4? Water supplied by Severn Trent / Hafren Dyfrdwy in this outcode registers a baseline average of 150 PPM across 4 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in HR4. The lowest mineral concentration is recorded in sector HR4 0 at 150 PPM, whereas sector HR4 9 experiences higher mineral levels reaching 150 PPM.

Due to the moderately hard water (150 PPM) in HR4, 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 HR4

Lowest mineral concentration

Softest
Sector HR4 0243 Postcodes • Moderately Hard
150 PPM10.5 °Clark

Hardest Sector in HR4

Highest mineral concentration

Highest Hardness
Sector HR4 9240 Postcodes • Moderately Hard
150 PPM10.5 °Clark

All Postcode Sectors in HR4

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