UK Water Quality Report • 2026 Data

Water Hardness in DN12

Water supply analysis across 4 postcode sectors in DN12 (Yorkshire Water).

Outcode Avg Hardness110 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode DN12

Looking for water hardness metrics in DN12? Water supplied by Yorkshire Water in this outcode registers a baseline average of 110 PPM across 4 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in DN12. The lowest mineral concentration is recorded in sector DN12 1 at 110 PPM, whereas sector DN12 4 experiences higher mineral levels reaching 110 PPM.

Due to the moderately hard water (110 PPM) in DN12, 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 DN12

Lowest mineral concentration

Softest
Sector DN12 1181 Postcodes • Moderately Soft
110 PPM7.7 °Clark

Hardest Sector in DN12

Highest mineral concentration

Highest Hardness
Sector DN12 4128 Postcodes • Moderately Soft
110 PPM7.7 °Clark

All Postcode Sectors in DN12

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