UK Water Quality Report • 2026 Data

Water Hardness in NR33

Water supply analysis across 4 postcode sectors in NR33 (Essex and Suffolk Water).

Outcode Avg Hardness320 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode NR33

For residents and businesses in outcode NR33, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that NR33 averages 320 PPM in mineral content, falling into the Very Hard Water classification.

Water chemistry can fluctuate across supply zones in NR33. The lowest mineral concentration is recorded in sector NR33 0 at 320 PPM, whereas sector NR33 9 experiences higher mineral levels reaching 320 PPM.

Due to the very hard water (320 PPM) in NR33, 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 NR33

Lowest mineral concentration

Softest
Sector NR33 0182 Postcodes • Very Hard
320 PPM22.4 °Clark

Hardest Sector in NR33

Highest mineral concentration

Highest Hardness
Sector NR33 9205 Postcodes • Very Hard
320 PPM22.4 °Clark

All Postcode Sectors in NR33

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