UK Water Quality Report • 2026 Data

Water Hardness in TR4

Water supply analysis across 2 postcode sectors in TR4 (South West Water).

Outcode Avg Hardness40 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode TR4

Looking for water hardness metrics in TR4? Water supplied by South West Water in this outcode registers a baseline average of 40 PPM across 2 distinct postcode sectors.

Water chemistry can fluctuate across supply zones in TR4. The lowest mineral concentration is recorded in sector TR4 8 at 40 PPM, whereas sector TR4 9 experiences higher mineral levels reaching 40 PPM.

Since TR4 enjoys soft water (40 PPM), residents generally do not need dishwasher salt or heavy-duty limescale descalers. Standard detergent dosages are sufficient for laundry and dishwashing. Review the individual postcode sectors below to get precise dishwasher salt settings and limescale recommendations.

Softest Sector in TR4

Lowest mineral concentration

Softest
Sector TR4 8293 Postcodes • Soft
40 PPM2.8 °Clark

Hardest Sector in TR4

Highest mineral concentration

Highest Hardness
Sector TR4 9229 Postcodes • Soft
40 PPM2.8 °Clark

All Postcode Sectors in TR4

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