UK Water Quality Report • 2026 Data

Water Hardness in LL55

Water supply analysis across 5 postcode sectors in LL55 (Dŵr Cymru Welsh Water).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode LL55

Analyzing water quality disclosures across all 5 postcode sectors in outcode LL55 reveals an average water hardness of 45 PPM (Soft Water). Public water supply across this area is managed by Dŵr Cymru Welsh Water, responsible for treating and delivering water to residential households.

Water chemistry can fluctuate across supply zones in LL55. The lowest mineral concentration is recorded in sector LL55 1 at 45 PPM, whereas sector LL55 9 experiences higher mineral levels reaching 45 PPM.

Since LL55 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 LL55

Lowest mineral concentration

Softest
Sector LL55 1175 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in LL55

Highest mineral concentration

Highest Hardness
Sector LL55 98 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in LL55

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