WaterWater Hardness in Newport
Gwent, Wales • 18 postcode districts
Slightly Hard
The average water hardness in Newport is 83 ppm, classified as slightly hard. Newport is served by Welsh Water (Dwr Cymru), covering 18 postcode districts across Gwent in the Wales region.
Hardness varies across the area — see the table below for a breakdown by postcode district.
Water Hardness by Postcode in Newport
| Postcode | Water Company | Hardness | PPM | Level |
|---|---|---|---|---|
| NP19 | Welsh Water (Dwr Cymru) | 119 ppm | Slightly Hard | |
| NP18 | Welsh Water (Dwr Cymru) | 118 ppm | Slightly Hard | |
| NP16 | Welsh Water (Dwr Cymru) | 116 ppm | Slightly Hard | |
| NP15 | Welsh Water (Dwr Cymru) | 115 ppm | Slightly Hard | |
| NP13 | Welsh Water (Dwr Cymru) | 113 ppm | Slightly Hard | |
| NP12 | Welsh Water (Dwr Cymru) | 112 ppm | Slightly Hard | |
| NP44 | Welsh Water (Dwr Cymru) | 112 ppm | Slightly Hard | |
| NP11 | Welsh Water (Dwr Cymru) | 111 ppm | Slightly Hard | |
| NP10 | Welsh Water (Dwr Cymru) | 110 ppm | Slightly Hard | |
| NP8 | Welsh Water (Dwr Cymru) | 64 ppm | Slightly Hard | |
| NP7 | Welsh Water (Dwr Cymru) | 63 ppm | Slightly Hard | |
| NP4 | Welsh Water (Dwr Cymru) | 60 ppm | Soft | |
| NP26 | Welsh Water (Dwr Cymru) | 48 ppm | Soft | |
| NP25 | Welsh Water (Dwr Cymru) | 47 ppm | Soft | |
| NP24 | Welsh Water (Dwr Cymru) | 46 ppm | Soft | |
| NP23 | Welsh Water (Dwr Cymru) | 45 ppm | Soft | |
| NP22 | Welsh Water (Dwr Cymru) | 44 ppm | Soft | |
| NP20 | Welsh Water (Dwr Cymru) | 42 ppm | Soft |
Water Companies Serving Newport
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