UK Water Quality Report • 2026 Data

Water Hardness in ST17

Water supply analysis across 3 postcode sectors in ST17 (Severn Trent Water).

Outcode Avg Hardness160 PPMModerately Hard Water
Regional Quality Overview

Water Supply Analysis: Outcode ST17

For residents and businesses in outcode ST17, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that ST17 averages 160 PPM in mineral content, falling into the Moderately Hard Water classification.

Water chemistry can fluctuate across supply zones in ST17. The lowest mineral concentration is recorded in sector ST17 0 at 160 PPM, whereas sector ST17 9 experiences higher mineral levels reaching 160 PPM.

Due to the moderately hard water (160 PPM) in ST17, 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 H02) 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 ST17

Lowest mineral concentration

Softest
Sector ST17 0282 Postcodes • Moderately Hard
160 PPM11.2 °Clark

Hardest Sector in ST17

Highest mineral concentration

Highest Hardness
Sector ST17 9348 Postcodes • Moderately Hard
160 PPM11.2 °Clark

All Postcode Sectors in ST17

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