UK Water Quality Report • 2026 Data

Water Hardness in CF42

Water supply analysis across 3 postcode sectors in CF42 (Dŵr Cymru Welsh Water).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode CF42

Looking for water hardness metrics in CF42? Water supplied by Dŵr Cymru Welsh Water in this outcode registers a baseline average of 45 PPM across 3 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in CF42. The lowest mineral concentration is recorded in sector CF42 5 at 45 PPM, whereas sector CF42 9 experiences higher mineral levels reaching 45 PPM.

Since CF42 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 CF42

Lowest mineral concentration

Softest
Sector CF42 5147 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in CF42

Highest mineral concentration

Highest Hardness
Sector CF42 91 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in CF42

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