UK Water Quality Report • 2026 Data

Water Hardness in BS40

Water supply analysis across 5 postcode sectors in BS40 (Bristol Water).

Outcode Avg Hardness265 PPMHard Water
Regional Quality Overview

Water Supply Analysis: Outcode BS40

Analyzing water quality disclosures across all 5 postcode sectors in outcode BS40 reveals an average water hardness of 265 PPM (Hard Water). Public water supply across this area is managed by Bristol Water, responsible for treating and delivering water to residential households.

Water chemistry can fluctuate across supply zones in BS40. The lowest mineral concentration is recorded in sector BS40 5 at 265 PPM, whereas sector BS40 9 experiences higher mineral levels reaching 265 PPM.

Due to the hard water (265 PPM) in BS40, 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 H04) 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 BS40

Lowest mineral concentration

Softest
Sector BS40 5222 Postcodes • Hard
265 PPM18.6 °Clark

Hardest Sector in BS40

Highest mineral concentration

Highest Hardness
Sector BS40 938 Postcodes • Hard
265 PPM18.6 °Clark

All Postcode Sectors in BS40

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