UK Water Quality Report • 2026 Data

Water Hardness in SP6

Water supply analysis across 4 postcode sectors in SP6 (South West Water).

Outcode Avg Hardness40 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode SP6

For residents and businesses in outcode SP6, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that SP6 averages 40 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in SP6. The lowest mineral concentration is recorded in sector SP6 1 at 40 PPM, whereas sector SP6 9 experiences higher mineral levels reaching 40 PPM.

Since SP6 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 SP6

Lowest mineral concentration

Softest
Sector SP6 1231 Postcodes • Soft
40 PPM2.8 °Clark

Hardest Sector in SP6

Highest mineral concentration

Highest Hardness
Sector SP6 91 Postcodes • Soft
40 PPM2.8 °Clark

All Postcode Sectors in SP6

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