UK Water Quality Report • 2026 Data

Water Hardness in CH90

Water supply analysis across 1 postcode sectors in CH90 (Northumbrian Water).

Outcode Avg Hardness130 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode CH90

For residents and businesses in outcode CH90, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that CH90 averages 130 PPM in mineral content, falling into the Moderately Hard Water classification.

Water chemistry can fluctuate across supply zones in CH90. The lowest mineral concentration is recorded in sector CH90 0 at 130 PPM, whereas sector CH90 0 experiences higher mineral levels reaching 130 PPM.

Due to the moderately hard water (130 PPM) in CH90, 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 CH90

Lowest mineral concentration

Softest
Sector CH90 01 Postcodes • Moderately Soft
130 PPM9.1 °Clark

Hardest Sector in CH90

Highest mineral concentration

Highest Hardness
Sector CH90 01 Postcodes • Moderately Soft
130 PPM9.1 °Clark

All Postcode Sectors in CH90

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