UK Water Quality Report • 2026 Data

Water Hardness in CA7

Water supply analysis across 9 postcode sectors in CA7 (United Utilities).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode CA7

For residents and businesses in outcode CA7, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that CA7 averages 45 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in CA7. The lowest mineral concentration is recorded in sector CA7 0 at 45 PPM, whereas sector CA7 9 experiences higher mineral levels reaching 45 PPM.

Since CA7 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 CA7

Lowest mineral concentration

Softest
Sector CA7 0122 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in CA7

Highest mineral concentration

Highest Hardness
Sector CA7 9210 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in CA7

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