UK Water Quality Report • 2026 Data

Water Hardness in L23

Water supply analysis across 10 postcode sectors in L23 (United Utilities).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode L23

Analyzing water quality disclosures across all 10 postcode sectors in outcode L23 reveals an average water hardness of 45 PPM (Soft Water). Public water supply across this area is managed by United Utilities, responsible for treating and delivering water to residential households.

Water chemistry can fluctuate across supply zones in L23. The lowest mineral concentration is recorded in sector L23 0 at 45 PPM, whereas sector L23 9 experiences higher mineral levels reaching 45 PPM.

Since L23 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 L23

Lowest mineral concentration

Softest
Sector L23 093 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in L23

Highest mineral concentration

Highest Hardness
Sector L23 999 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in L23

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