UK Water Quality Report • 2026 Data

Water Hardness in PL4

Water supply analysis across 5 postcode sectors in PL4 (South West Water).

Outcode Avg Hardness40 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode PL4

For residents and businesses in outcode PL4, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that PL4 averages 40 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in PL4. The lowest mineral concentration is recorded in sector PL4 0 at 40 PPM, whereas sector PL4 9 experiences higher mineral levels reaching 40 PPM.

Since PL4 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 PL4

Lowest mineral concentration

Softest
Sector PL4 0160 Postcodes • Soft
40 PPM2.8 °Clark

Hardest Sector in PL4

Highest mineral concentration

Highest Hardness
Sector PL4 9167 Postcodes • Soft
40 PPM2.8 °Clark

All Postcode Sectors in PL4

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