UK Water Quality Report • 2026 Data

Water Hardness in CW12

Water supply analysis across 5 postcode sectors in CW12 (United Utilities).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode CW12

For residents and businesses in outcode CW12, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that CW12 averages 45 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in CW12. The lowest mineral concentration is recorded in sector CW12 1 at 45 PPM, whereas sector CW12 9 experiences higher mineral levels reaching 45 PPM.

Since CW12 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 CW12

Lowest mineral concentration

Softest
Sector CW12 1231 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in CW12

Highest mineral concentration

Highest Hardness
Sector CW12 98 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in CW12

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