UK Water Quality Report • 2026 Data

Water Hardness in PL31

Water supply analysis across 3 postcode sectors in PL31 (South West Water).

Outcode Avg Hardness40 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode PL31

For residents and businesses in outcode PL31, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that PL31 averages 40 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in PL31. The lowest mineral concentration is recorded in sector PL31 1 at 40 PPM, whereas sector PL31 9 experiences higher mineral levels reaching 40 PPM.

Since PL31 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 PL31

Lowest mineral concentration

Softest
Sector PL31 1204 Postcodes • Soft
40 PPM2.8 °Clark

Hardest Sector in PL31

Highest mineral concentration

Highest Hardness
Sector PL31 93 Postcodes • Soft
40 PPM2.8 °Clark

All Postcode Sectors in PL31

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