UK Water Quality Report • 2026 Data

Water Hardness in DN17

Water supply analysis across 4 postcode sectors in DN17 (Anglian Water).

Outcode Avg Hardness260 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode DN17

For residents and businesses in outcode DN17, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that DN17 averages 260 PPM in mineral content, falling into the Hard Water classification.

Water chemistry can fluctuate across supply zones in DN17. The lowest mineral concentration is recorded in sector DN17 4 at 110 PPM, whereas sector DN17 3 experiences higher mineral levels reaching 310 PPM.

Due to the hard water (260 PPM) in DN17, 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 DN17

Lowest mineral concentration

Softest
Sector DN17 4214 Postcodes • Moderately Soft
110 PPM7.7 °Clark

Hardest Sector in DN17

Highest mineral concentration

Highest Hardness
Sector DN17 3227 Postcodes • Very Hard
310 PPM21.7 °Clark

All Postcode Sectors in DN17

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