UK Water Quality Report • 2026 Data

Water Hardness in GU27

Water supply analysis across 4 postcode sectors in GU27 (Scottish Water).

Outcode Avg Hardness25 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode GU27

Analyzing water quality disclosures across all 4 postcode sectors in outcode GU27 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 GU27. The lowest mineral concentration is recorded in sector GU27 1 at 25 PPM, whereas sector GU27 9 experiences higher mineral levels reaching 25 PPM.

Since GU27 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 GU27

Lowest mineral concentration

Softest
Sector GU27 1193 Postcodes • Soft
25 PPM1.8 °Clark

Hardest Sector in GU27

Highest mineral concentration

Highest Hardness
Sector GU27 917 Postcodes • Soft
25 PPM1.8 °Clark

All Postcode Sectors in GU27

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