UK Water Quality Report • 2026 Data

Water Hardness in NP11

Water supply analysis across 6 postcode sectors in NP11 (Dŵr Cymru Welsh Water).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode NP11

For residents and businesses in outcode NP11, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that NP11 averages 45 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in NP11. The lowest mineral concentration is recorded in sector NP11 3 at 45 PPM, whereas sector NP11 9 experiences higher mineral levels reaching 45 PPM.

Since NP11 enjoys soft water (45 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 NP11

Lowest mineral concentration

Softest
Sector NP11 3126 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in NP11

Highest mineral concentration

Highest Hardness
Sector NP11 91 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in NP11

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