Slightly Hard at 83 ppm · 18 postcode districts
Be notified when water companies in Newport report changes to hardness levels.
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. NP19 has the hardest water at 119 ppm, while NP20 is the softest at 42 ppm.
Sorted by hardness — tap a postcode for full details.
Tap for full coverage area and hardness data.
Each water company publishes its own hardness data, so you can cross-check the Newport figures here against the published hardness data from Dwr Cymru Welsh Water.
Learn more about water hardness and how to manage it.
At 83 ppm, your water is slightly hard. A home testing kit lets you verify the exact hardness and check for other contaminants.
Home water test strips that check hardness, pH, chlorine, lead, and 12 other parameters. Results in around 60 seconds. 125 strips per pack.
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