UK Water Quality Report • 2026 Data

Water Hardness in CB22

Water supply analysis across 5 postcode sectors in CB22 (Cambridge Water).

Outcode Avg Hardness315 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode CB22

Looking for water hardness metrics in CB22? Water supplied by Cambridge Water in this outcode registers a baseline average of 315 PPM across 5 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in CB22. The lowest mineral concentration is recorded in sector CB22 3 at 315 PPM, whereas sector CB22 7 experiences higher mineral levels reaching 315 PPM.

Due to the very hard water (315 PPM) in CB22, 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 CB22

Lowest mineral concentration

Softest
Sector CB22 3189 Postcodes • Very Hard
315 PPM22 °Clark

Hardest Sector in CB22

Highest mineral concentration

Highest Hardness
Sector CB22 793 Postcodes • Very Hard
315 PPM22 °Clark

All Postcode Sectors in CB22

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