UK Water Quality Report • 2026 Data

Water Hardness in CH31

Water supply analysis across 1 postcode sectors in CH31 (United Utilities).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode CH31

Looking for water hardness metrics in CH31? Water supplied by United Utilities in this outcode registers a baseline average of 45 PPM across 1 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in CH31. The lowest mineral concentration is recorded in sector CH31 9 at 45 PPM, whereas sector CH31 9 experiences higher mineral levels reaching 45 PPM.

Since CH31 enjoys soft water (45 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 CH31

Lowest mineral concentration

Softest
Sector CH31 99 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in CH31

Highest mineral concentration

Highest Hardness
Sector CH31 99 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in CH31

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