UK Water Quality Report • 2026 Data

Water Hardness in GU15

Water supply analysis across 5 postcode sectors in GU15 (Scottish Water).

Outcode Avg Hardness25 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode GU15

Analyzing water quality disclosures across all 5 postcode sectors in outcode GU15 reveals an average water hardness of 25 PPM (Soft Water). Public water supply across this area is managed by Scottish Water, responsible for treating and delivering water to residential households.

Water chemistry can fluctuate across supply zones in GU15. The lowest mineral concentration is recorded in sector GU15 1 at 25 PPM, whereas sector GU15 9 experiences higher mineral levels reaching 25 PPM.

Since GU15 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 GU15

Lowest mineral concentration

Softest
Sector GU15 1226 Postcodes • Soft
25 PPM1.8 °Clark

Hardest Sector in GU15

Highest mineral concentration

Highest Hardness
Sector GU15 956 Postcodes • Soft
25 PPM1.8 °Clark

All Postcode Sectors in GU15

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