UK Water Quality Report • 2026 Data

Water Hardness in GU8

Water supply analysis across 3 postcode sectors in GU8 (Scottish Water).

Outcode Avg Hardness25 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode GU8

Looking for water hardness metrics in GU8? Water supplied by Scottish Water in this outcode registers a baseline average of 25 PPM across 3 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in GU8. The lowest mineral concentration is recorded in sector GU8 4 at 25 PPM, whereas sector GU8 6 experiences higher mineral levels reaching 25 PPM.

Since GU8 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 GU8

Lowest mineral concentration

Softest
Sector GU8 4243 Postcodes • Soft
25 PPM1.8 °Clark

Hardest Sector in GU8

Highest mineral concentration

Highest Hardness
Sector GU8 6152 Postcodes • Soft
25 PPM1.8 °Clark

All Postcode Sectors in GU8

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