UK Water Quality Report • 2026 Data

Water Hardness in CB1

Water supply analysis across 7 postcode sectors in CB1 (Cambridge Water).

Outcode Avg Hardness315 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode CB1

Looking for water hardness metrics in CB1? Water supplied by Cambridge Water in this outcode registers a baseline average of 315 PPM across 7 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in CB1. The lowest mineral concentration is recorded in sector CB1 0 at 315 PPM, whereas sector CB1 9 experiences higher mineral levels reaching 315 PPM.

Due to the very hard water (315 PPM) in CB1, 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 CB1

Lowest mineral concentration

Softest
Sector CB1 0238 Postcodes • Very Hard
315 PPM22 °Clark

Hardest Sector in CB1

Highest mineral concentration

Highest Hardness
Sector CB1 9161 Postcodes • Very Hard
315 PPM22 °Clark

All Postcode Sectors in CB1

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