UK Water Quality Report • 2026 Data

Water Hardness in CA18

Water supply analysis across 1 postcode sectors in CA18 (United Utilities).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode CA18

Analyzing water quality disclosures across all 1 postcode sectors in outcode CA18 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 CA18. The lowest mineral concentration is recorded in sector CA18 1 at 45 PPM, whereas sector CA18 1 experiences higher mineral levels reaching 45 PPM.

Since CA18 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 CA18

Lowest mineral concentration

Softest
Sector CA18 125 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in CA18

Highest mineral concentration

Highest Hardness
Sector CA18 125 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in CA18

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