UK Water Quality Report • 2026 Data

Water Hardness in SY7

Water supply analysis across 4 postcode sectors in SY7 (Dŵr Cymru Welsh Water).

Outcode Avg Hardness131.3 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode SY7

Looking for water hardness metrics in SY7? Water supplied by Dŵr Cymru Welsh Water in this outcode registers a baseline average of 131.3 PPM across 4 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in SY7. The lowest mineral concentration is recorded in sector SY7 0 at 45 PPM, whereas sector SY7 9 experiences higher mineral levels reaching 160 PPM.

Due to the moderately hard water (131.3 PPM) in SY7, 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 H02) 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 SY7

Lowest mineral concentration

Softest
Sector SY7 0171 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in SY7

Highest mineral concentration

Highest Hardness
Sector SY7 9210 Postcodes • Moderately Hard
160 PPM11.2 °Clark

All Postcode Sectors in SY7

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