UK Water Quality Report • 2026 Data

Water Hardness in L31

Water supply analysis across 10 postcode sectors in L31 (United Utilities).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode L31

Looking for water hardness metrics in L31? Water supplied by United Utilities in this outcode registers a baseline average of 45 PPM across 10 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in L31. The lowest mineral concentration is recorded in sector L31 0 at 45 PPM, whereas sector L31 9 experiences higher mineral levels reaching 45 PPM.

Since L31 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 L31

Lowest mineral concentration

Softest
Sector L31 047 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in L31

Highest mineral concentration

Highest Hardness
Sector L31 975 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in L31

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