UK Water Quality Report • 2026 Data

Water Hardness in LL77

Water supply analysis across 3 postcode sectors in LL77 (Dŵr Cymru Welsh Water).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode LL77

For residents and businesses in outcode LL77, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that LL77 averages 45 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in LL77. The lowest mineral concentration is recorded in sector LL77 7 at 45 PPM, whereas sector LL77 9 experiences higher mineral levels reaching 45 PPM.

Since LL77 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 LL77

Lowest mineral concentration

Softest
Sector LL77 7238 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in LL77

Highest mineral concentration

Highest Hardness
Sector LL77 98 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in LL77

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