UK Water Quality Report • 2026 Data

Water Hardness in WS1

Water supply analysis across 5 postcode sectors in WS1 (South Staffordshire Water).

Outcode Avg Hardness300 PPMVery Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode WS1

Analyzing water quality disclosures across all 5 postcode sectors in outcode WS1 reveals an average water hardness of 300 PPM (Very Hard Water). Public water supply across this area is managed by South Staffordshire Water, responsible for treating and delivering water to residential households.

Water chemistry can fluctuate across supply zones in WS1. The lowest mineral concentration is recorded in sector WS1 1 at 300 PPM, whereas sector WS1 9 experiences higher mineral levels reaching 300 PPM.

Due to the very hard water (300 PPM) in WS1, 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 WS1

Lowest mineral concentration

Softest
Sector WS1 1108 Postcodes • Very Hard
300 PPM21 °Clark

Hardest Sector in WS1

Highest mineral concentration

Highest Hardness
Sector WS1 947 Postcodes • Very Hard
300 PPM21 °Clark

All Postcode Sectors in WS1

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