UK Water Quality Report • 2026 Data

Water Hardness in NP23

Water supply analysis across 6 postcode sectors in NP23 (Dŵr Cymru Welsh Water).

Outcode Avg Hardness45 PPMSoft Water
Regional Quality Overview

Water Supply Analysis: Outcode NP23

For residents and businesses in outcode NP23, understanding local water chemistry is essential for appliance longevity and limescale prevention. Our environmental data shows that NP23 averages 45 PPM in mineral content, falling into the Soft Water classification.

Water chemistry can fluctuate across supply zones in NP23. The lowest mineral concentration is recorded in sector NP23 4 at 45 PPM, whereas sector NP23 9 experiences higher mineral levels reaching 45 PPM.

Since NP23 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 NP23

Lowest mineral concentration

Softest
Sector NP23 4271 Postcodes • Soft
45 PPM3.2 °Clark

Hardest Sector in NP23

Highest mineral concentration

Highest Hardness
Sector NP23 920 Postcodes • Soft
45 PPM3.2 °Clark

All Postcode Sectors in NP23

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