UK Water Quality Report • 2026 Data

Water Hardness in CB25

Water supply analysis across 2 postcode sectors in CB25 (Anglian Water).

Outcode Avg Hardness312.5 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode CB25

Looking for water hardness metrics in CB25? Water supplied by Anglian Water in this outcode registers a baseline average of 312.5 PPM across 2 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in CB25. The lowest mineral concentration is recorded in sector CB25 0 at 310 PPM, whereas sector CB25 9 experiences higher mineral levels reaching 315 PPM.

Due to the very hard water (312.5 PPM) in CB25, 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 H07 (Max Salt)) 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 CB25

Lowest mineral concentration

Softest
Sector CB25 0169 Postcodes • Very Hard
310 PPM21.7 °Clark

Hardest Sector in CB25

Highest mineral concentration

Highest Hardness
Sector CB25 9253 Postcodes • Very Hard
315 PPM22 °Clark

All Postcode Sectors in CB25

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