UK Water Quality Report • 2026 Data

Water Hardness in SY16

Water supply analysis across 5 postcode sectors in SY16 (Hafren Dyfrdwy).

Outcode Avg Hardness140 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode SY16

Looking for water hardness metrics in SY16? Water supplied by Hafren Dyfrdwy in this outcode registers a baseline average of 140 PPM across 5 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in SY16. The lowest mineral concentration is recorded in sector SY16 1 at 140 PPM, whereas sector SY16 9 experiences higher mineral levels reaching 140 PPM.

Due to the moderately hard water (140 PPM) in SY16, 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 SY16

Lowest mineral concentration

Softest
Sector SY16 1177 Postcodes • Moderately Hard
140 PPM9.8 °Clark

Hardest Sector in SY16

Highest mineral concentration

Highest Hardness
Sector SY16 97 Postcodes • Moderately Hard
140 PPM9.8 °Clark

All Postcode Sectors in SY16

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