UK Water Quality Report • 2026 Data

Water Hardness in SO41

Water supply analysis across 7 postcode sectors in SO41 (South West Water).

Outcode Avg Hardness40 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode SO41

Looking for water hardness metrics in SO41? Water supplied by South West Water in this outcode registers a baseline average of 40 PPM across 7 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in SO41. The lowest mineral concentration is recorded in sector SO41 0 at 40 PPM, whereas sector SO41 9 experiences higher mineral levels reaching 40 PPM.

Since SO41 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 SO41

Lowest mineral concentration

Softest
Sector SO41 0312 Postcodes • Soft
40 PPM2.8 °Clark

Hardest Sector in SO41

Highest mineral concentration

Highest Hardness
Sector SO41 9226 Postcodes • Soft
40 PPM2.8 °Clark

All Postcode Sectors in SO41

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