UK Water Quality Report • 2026 Data

Water Hardness in SA18

Water supply analysis across 4 postcode sectors in SA18 (Dŵr Cymru Welsh Water).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode SA18

For residents and businesses in outcode SA18, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that SA18 averages 45 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in SA18. The lowest mineral concentration is recorded in sector SA18 1 at 45 PPM, whereas sector SA18 9 experiences higher mineral levels reaching 45 PPM.

Since SA18 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 SA18

Lowest mineral concentration

Softest
Sector SA18 1227 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in SA18

Highest mineral concentration

Highest Hardness
Sector SA18 98 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in SA18

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