UK Water Quality Report • 2026 Data

Water Hardness in IP12

Water supply analysis across 5 postcode sectors in IP12 (Anglian Water).

Outcode Avg Hardness310 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode IP12

Analyzing water quality disclosures across all 5 postcode sectors in outcode IP12 reveals an average water hardness of 310 PPM (Very Hard Water). Public water supply across this area is managed by Anglian Water, responsible for treating and delivering water to residential households.

Water chemistry can fluctuate across supply zones in IP12. The lowest mineral concentration is recorded in sector IP12 1 at 310 PPM, whereas sector IP12 9 experiences higher mineral levels reaching 310 PPM.

Due to the very hard water (310 PPM) in IP12, 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 IP12

Lowest mineral concentration

Softest
Sector IP12 1255 Postcodes • Very Hard
310 PPM21.7 °Clark

Hardest Sector in IP12

Highest mineral concentration

Highest Hardness
Sector IP12 949 Postcodes • Very Hard
310 PPM21.7 °Clark

All Postcode Sectors in IP12

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