UK Water Quality Report • 2026 Data

Water Hardness in PH21

Water supply analysis across 1 postcode sectors in PH21 (Scottish Water).

Outcode Avg Hardness25 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode PH21

Looking for water hardness metrics in PH21? Water supplied by Scottish Water in this outcode registers a baseline average of 25 PPM across 1 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in PH21. The lowest mineral concentration is recorded in sector PH21 1 at 25 PPM, whereas sector PH21 1 experiences higher mineral levels reaching 25 PPM.

Since PH21 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 PH21

Lowest mineral concentration

Softest
Sector PH21 1108 Postcodes • Soft
25 PPM1.8 °Clark

Hardest Sector in PH21

Highest mineral concentration

Highest Hardness
Sector PH21 1108 Postcodes • Soft
25 PPM1.8 °Clark

All Postcode Sectors in PH21

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