UK Water Quality Report • 2026 Data

Water Hardness in TW98

Water supply analysis across 2 postcode sectors in TW98 (Northumbrian Water).

Outcode Avg Hardness130 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode TW98

Looking for water hardness metrics in TW98? Water supplied by Northumbrian Water in this outcode registers a baseline average of 130 PPM across 2 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in TW98. The lowest mineral concentration is recorded in sector TW98 7 at 130 PPM, whereas sector TW98 9 experiences higher mineral levels reaching 130 PPM.

Due to the moderately hard water (130 PPM) in TW98, 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 TW98

Lowest mineral concentration

Softest
Sector TW98 730 Postcodes • Moderately Soft
130 PPM9.1 °Clark

Hardest Sector in TW98

Highest mineral concentration

Highest Hardness
Sector TW98 928 Postcodes • Moderately Soft
130 PPM9.1 °Clark

All Postcode Sectors in TW98

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