UK Water Quality Report • 2026 Data

Water Hardness in SA31

Water supply analysis across 4 postcode sectors in SA31 (South West Water).

Outcode Avg Hardness40 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode SA31

Looking for water hardness metrics in SA31? Water supplied by South West Water in this outcode registers a baseline average of 40 PPM across 4 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in SA31. The lowest mineral concentration is recorded in sector SA31 1 at 40 PPM, whereas sector SA31 9 experiences higher mineral levels reaching 40 PPM.

Since SA31 enjoys soft water (40 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 SA31

Lowest mineral concentration

Softest
Sector SA31 1208 Postcodes • Soft
40 PPM2.8 °Clark

Hardest Sector in SA31

Highest mineral concentration

Highest Hardness
Sector SA31 917 Postcodes • Soft
40 PPM2.8 °Clark

All Postcode Sectors in SA31

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