UK Water Quality Report • 2026 Data

Water Hardness in CF15

Water supply analysis across 4 postcode sectors in CF15 (Dŵr Cymru Welsh Water).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode CF15

Looking for water hardness metrics in CF15? Water supplied by Dŵr Cymru Welsh Water in this outcode registers a baseline average of 45 PPM across 4 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in CF15. The lowest mineral concentration is recorded in sector CF15 5 at 45 PPM, whereas sector CF15 9 experiences higher mineral levels reaching 45 PPM.

Since CF15 enjoys soft water (45 PPM), residents generally do not need dishwasher salt or heavy-duty limescale descalers. Standard detergent dosages are sufficient for laundry and dishwashing. Review the individual postcode sectors below to get precise dishwasher salt settings and limescale recommendations.

Softest Sector in CF15

Lowest mineral concentration

Softest
Sector CF15 56 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in CF15

Highest mineral concentration

Highest Hardness
Sector CF15 9154 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in CF15

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