UK Water Quality Report • 2026 Data

Water Hardness in IG1

Water supply analysis across 6 postcode sectors in IG1 (Essex and Suffolk Water).

Outcode Avg Hardness312.5 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode IG1

For residents and businesses in outcode IG1, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that IG1 averages 312.5 PPM in mineral content, falling into the Very Hard Water classification.

Water chemistry can fluctuate across supply zones in IG1. The lowest mineral concentration is recorded in sector IG1 3 at 275 PPM, whereas sector IG1 9 experiences higher mineral levels reaching 320 PPM.

Due to the very hard water (312.5 PPM) in IG1, 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 IG1

Lowest mineral concentration

Softest
Sector IG1 3189 Postcodes • Hard
275 PPM19.3 °Clark

Hardest Sector in IG1

Highest mineral concentration

Highest Hardness
Sector IG1 933 Postcodes • Very Hard
320 PPM22.4 °Clark

All Postcode Sectors in IG1

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