UK Water Quality Report • 2026 Data

Water Hardness in SE14

Water supply analysis across 3 postcode sectors in SE14 (Thames Water).

Outcode Avg Hardness275 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode SE14

For residents and businesses in outcode SE14, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that SE14 averages 275 PPM in mineral content, falling into the Hard Water classification.

Water chemistry can fluctuate across supply zones in SE14. The lowest mineral concentration is recorded in sector SE14 5 at 275 PPM, whereas sector SE14 9 experiences higher mineral levels reaching 275 PPM.

Due to the hard water (275 PPM) in SE14, 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 SE14

Lowest mineral concentration

Softest
Sector SE14 5224 Postcodes • Hard
275 PPM19.3 °Clark

Hardest Sector in SE14

Highest mineral concentration

Highest Hardness
Sector SE14 98 Postcodes • Hard
275 PPM19.3 °Clark

All Postcode Sectors in SE14

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