UK Water Quality Report • 2026 Data

Water Hardness in CW5

Water supply analysis across 5 postcode sectors in CW5 (United Utilities).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode CW5

Analyzing water quality disclosures across all 5 postcode sectors in outcode CW5 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 CW5. The lowest mineral concentration is recorded in sector CW5 5 at 45 PPM, whereas sector CW5 9 experiences higher mineral levels reaching 45 PPM.

Since CW5 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 CW5

Lowest mineral concentration

Softest
Sector CW5 5275 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in CW5

Highest mineral concentration

Highest Hardness
Sector CW5 911 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in CW5

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