UK Water Quality Report • 2026 Data

Water Hardness in CR3

Water supply analysis across 5 postcode sectors in CR3 (SES Water).

Outcode Avg Hardness260 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode CR3

Looking for water hardness metrics in CR3? Water supplied by SES Water in this outcode registers a baseline average of 260 PPM across 5 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in CR3. The lowest mineral concentration is recorded in sector CR3 0 at 260 PPM, whereas sector CR3 7 experiences higher mineral levels reaching 260 PPM.

Due to the hard water (260 PPM) in CR3, 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 H04) 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 CR3

Lowest mineral concentration

Softest
Sector CR3 0109 Postcodes • Hard
260 PPM18.2 °Clark

Hardest Sector in CR3

Highest mineral concentration

Highest Hardness
Sector CR3 783 Postcodes • Hard
260 PPM18.2 °Clark

All Postcode Sectors in CR3

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