UK Water Quality Report • 2026 Data

Water Hardness in DH8

Water supply analysis across 7 postcode sectors in DH8 (Northumbrian Water).

Outcode Avg Hardness130 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode DH8

For residents and businesses in outcode DH8, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that DH8 averages 130 PPM in mineral content, falling into the Moderately Hard Water classification.

Water chemistry can fluctuate across supply zones in DH8. The lowest mineral concentration is recorded in sector DH8 0 at 130 PPM, whereas sector DH8 9 experiences higher mineral levels reaching 130 PPM.

Due to the moderately hard water (130 PPM) in DH8, 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 H01) 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 DH8

Lowest mineral concentration

Softest
Sector DH8 0230 Postcodes • Moderately Soft
130 PPM9.1 °Clark

Hardest Sector in DH8

Highest mineral concentration

Highest Hardness
Sector DH8 9233 Postcodes • Moderately Soft
130 PPM9.1 °Clark

All Postcode Sectors in DH8

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