UK Water Quality Report • 2026 Data

Water Hardness in CH8

Water supply analysis across 3 postcode sectors in CH8 (Severn Trent / Hafren Dyfrdwy).

Outcode Avg Hardness150 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode CH8

Analyzing water quality disclosures across all 3 postcode sectors in outcode CH8 reveals an average water hardness of 150 PPM (Moderately Hard Water). Public water supply across this area is managed by Severn Trent / Hafren Dyfrdwy, responsible for treating and delivering water to residential households.

Water chemistry can fluctuate across supply zones in CH8. The lowest mineral concentration is recorded in sector CH8 7 at 150 PPM, whereas sector CH8 9 experiences higher mineral levels reaching 150 PPM.

Due to the moderately hard water (150 PPM) in CH8, 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 CH8

Lowest mineral concentration

Softest
Sector CH8 7278 Postcodes • Moderately Hard
150 PPM10.5 °Clark

Hardest Sector in CH8

Highest mineral concentration

Highest Hardness
Sector CH8 9199 Postcodes • Moderately Hard
150 PPM10.5 °Clark

All Postcode Sectors in CH8

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