UK Water Quality Report • 2026 Data

Water Hardness in TD11

Water supply analysis across 2 postcode sectors in TD11 (Northumbrian Water).

Outcode Avg Hardness130 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode TD11

For residents and businesses in outcode TD11, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that TD11 averages 130 PPM in mineral content, falling into the Moderately Hard Water classification.

Water chemistry can fluctuate across supply zones in TD11. The lowest mineral concentration is recorded in sector TD11 3 at 130 PPM, whereas sector TD11 9 experiences higher mineral levels reaching 130 PPM.

Due to the moderately hard water (130 PPM) in TD11, 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 TD11

Lowest mineral concentration

Softest
Sector TD11 3294 Postcodes • Moderately Soft
130 PPM9.1 °Clark

Hardest Sector in TD11

Highest mineral concentration

Highest Hardness
Sector TD11 93 Postcodes • Moderately Soft
130 PPM9.1 °Clark

All Postcode Sectors in TD11

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