UK Water Quality Report • 2026 Data

Water Hardness in DN11

Water supply analysis across 3 postcode sectors in DN11 (Yorkshire Water).

Outcode Avg Hardness126.7 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode DN11

For residents and businesses in outcode DN11, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that DN11 averages 126.7 PPM in mineral content, falling into the Moderately Hard Water classification.

Water chemistry can fluctuate across supply zones in DN11. The lowest mineral concentration is recorded in sector DN11 0 at 110 PPM, whereas sector DN11 8 experiences higher mineral levels reaching 160 PPM.

Due to the moderately hard water (126.7 PPM) in DN11, 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 H02) 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 DN11

Lowest mineral concentration

Softest
Sector DN11 0335 Postcodes • Moderately Soft
110 PPM7.7 °Clark

Hardest Sector in DN11

Highest mineral concentration

Highest Hardness
Sector DN11 8274 Postcodes • Moderately Hard
160 PPM11.2 °Clark

All Postcode Sectors in DN11

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