UK Water Quality Report • 2026 Data

Water Hardness in NN2

Water supply analysis across 4 postcode sectors in NN2 (Anglian Water).

Outcode Avg Hardness310 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode NN2

Looking for water hardness metrics in NN2? Water supplied by Anglian Water in this outcode registers a baseline average of 310 PPM across 4 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in NN2. The lowest mineral concentration is recorded in sector NN2 1 at 310 PPM, whereas sector NN2 8 experiences higher mineral levels reaching 310 PPM.

Due to the very hard water (310 PPM) in NN2, 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 NN2

Lowest mineral concentration

Softest
Sector NN2 158 Postcodes • Very Hard
310 PPM21.7 °Clark

Hardest Sector in NN2

Highest mineral concentration

Highest Hardness
Sector NN2 8310 Postcodes • Very Hard
310 PPM21.7 °Clark

All Postcode Sectors in NN2

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