UK Water Quality Report • 2026 Data

Water Hardness in GU25

Water supply analysis across 2 postcode sectors in GU25 (Scottish Water).

Outcode Avg Hardness25 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode GU25

For residents and businesses in outcode GU25, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that GU25 averages 25 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in GU25. The lowest mineral concentration is recorded in sector GU25 4 at 25 PPM, whereas sector GU25 9 experiences higher mineral levels reaching 25 PPM.

Since GU25 enjoys soft water (25 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 GU25

Lowest mineral concentration

Softest
Sector GU25 4208 Postcodes • Soft
25 PPM1.8 °Clark

Hardest Sector in GU25

Highest mineral concentration

Highest Hardness
Sector GU25 913 Postcodes • Soft
25 PPM1.8 °Clark

All Postcode Sectors in GU25

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