UK Water Quality Report • 2026 Data

Water Hardness in CH3

Water supply analysis across 5 postcode sectors in CH3 (Severn Trent Water).

Outcode Avg Hardness114 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode CH3

For residents and businesses in outcode CH3, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that CH3 averages 114 PPM in mineral content, falling into the Moderately Hard Water classification.

Water chemistry can fluctuate across supply zones in CH3. The lowest mineral concentration is recorded in sector CH3 8 at 45 PPM, whereas sector CH3 7 experiences higher mineral levels reaching 160 PPM.

Due to the moderately hard water (114 PPM) in CH3, 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 CH3

Lowest mineral concentration

Softest
Sector CH3 8149 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in CH3

Highest mineral concentration

Highest Hardness
Sector CH3 7216 Postcodes • Moderately Hard
160 PPM11.2 °Clark

All Postcode Sectors in CH3

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