Slightly Hard at 66 ppm · 67 postcode districts
The average water hardness in Wrexham is 66 ppm, classified as slightly hard. Wrexham is served by Welsh Water (Dwr Cymru), covering 67 postcode districts across North Wales in the Wales region.
Hardness varies across the area — see the table below for a breakdown by postcode district.
Sorted by hardness — tap a postcode for full details.
Tap for full coverage area and hardness data.
Learn more about water hardness and how to manage it.
At 66 ppm, your water is slightly hard. A home testing kit lets you verify the exact hardness and check for other contaminants.
Quick home water test strips — checks hardness, pH, chlorine, lead, and 12 other parameters. Results in 60 seconds. 100 strips per pack.
View on AmazonBe notified when water companies in Wrexham report changes to hardness levels.