UK Water Quality Report • 2026 Data

Water Hardness in MK11

Water supply analysis across 5 postcode sectors in MK11 (Anglian Water).

Outcode Avg Hardness310 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode MK11

For residents and businesses in outcode MK11, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that MK11 averages 310 PPM in mineral content, falling into the Very Hard Water classification.

Water chemistry can fluctuate across supply zones in MK11. The lowest mineral concentration is recorded in sector MK11 1 at 310 PPM, whereas sector MK11 9 experiences higher mineral levels reaching 310 PPM.

Due to the very hard water (310 PPM) in MK11, 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 MK11

Lowest mineral concentration

Softest
Sector MK11 1146 Postcodes • Very Hard
310 PPM21.7 °Clark

Hardest Sector in MK11

Highest mineral concentration

Highest Hardness
Sector MK11 932 Postcodes • Very Hard
310 PPM21.7 °Clark

All Postcode Sectors in MK11

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