UK Water Quality Report • 2026 Data

Water Hardness in MK20

Water supply analysis across 1 postcode sectors in MK20 (Anglian Water).

Outcode Avg Hardness310 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode MK20

For residents and businesses in outcode MK20, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that MK20 averages 310 PPM in mineral content, falling into the Very Hard Water classification.

Water chemistry can fluctuate across supply zones in MK20. The lowest mineral concentration is recorded in sector MK20 0 at 310 PPM, whereas sector MK20 0 experiences higher mineral levels reaching 310 PPM.

Due to the very hard water (310 PPM) in MK20, limescale build-up can occur on heating elements, shower heads, and boilers. Setting your dishwasher water softener to the correct level (e.g. Bosch setting H07 (Max Salt)) is strongly recommended to prevent cloudy glassware and internal scale accumulation. Review the individual postcode sectors below to get precise dishwasher salt settings and limescale recommendations.

Softest Sector in MK20

Lowest mineral concentration

Softest
Sector MK20 06 Postcodes • Very Hard
310 PPM21.7 °Clark

Hardest Sector in MK20

Highest mineral concentration

Highest Hardness
Sector MK20 06 Postcodes • Very Hard
310 PPM21.7 °Clark

All Postcode Sectors in MK20

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