UK Water Quality Report • 2026 Data

Water Hardness in N14

Water supply analysis across 5 postcode sectors in N14 (Thames Water).

Outcode Avg Hardness278 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode N14

Looking for water hardness metrics in N14? Water supplied by Thames Water in this outcode registers a baseline average of 278 PPM across 5 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in N14. The lowest mineral concentration is recorded in sector N14 4 at 275 PPM, whereas sector N14 5 experiences higher mineral levels reaching 290 PPM.

Due to the hard water (278 PPM) in N14, 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 N14

Lowest mineral concentration

Softest
Sector N14 4245 Postcodes • Hard
275 PPM19.3 °Clark

Hardest Sector in N14

Highest mineral concentration

Highest Hardness
Sector N14 5156 Postcodes • Hard
290 PPM20.3 °Clark

All Postcode Sectors in N14

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