Wales Water Quality
Water hardness and quality data for 65 cities in Wales, United Kingdom.
Est. average
≈106mg/L
7.4 °Clark
Hardness level
🟡 Slightly Hard
Based on estimates
Cities
65
65 with data
Cardiff
Pop. 372,089
Newport
Pop. 161,506
Swansea
Pop. 300,352
Aberdare
Pop. 31,135
Barry
Pop. 54,673
Bridgend
Pop. 49,597
Briton Ferry
Pop. 35,179
Buckley
Pop. 63,576
Caerphilly
Pop. 31,060
Coity
Pop. 41,352
Cwmbran
Pop. 48,535
Deeside
Pop. 32,000
Ebbw Vale
Pop. 33,068
Llanelli
Pop. 49,591
Merthyr Tydfil
Pop. 43,820
Neath
Pop. 46,126
Pontypool
Pop. 35,686
Pontypridd
Pop. 31,206
Rhondda
Pop. 69,506
Tonypandy
Pop. 62,545
Wrexham
Pop. 65,692
Abercarn
Pop. 10,118
Abergavenny
Pop. 13,695
Abergele
Pop. 11,290
Aberkenfig
Pop. 10,083
Abertillery
Pop. 10,946
Aberystwyth
Pop. 18,749
Ammanford
Pop. 23,709
Bangor
Pop. 18,322
Bargoed
Pop. 13,412
Blackwood
Pop. 15,476
Brymbo
Pop. 18,111
Brynmawr
Pop. 14,924
Carmarthen
Pop. 15,854
Chepstow
Pop. 11,900
Clydach
Pop. 19,307
Colwyn Bay
Pop. 29,275
Flint
Pop. 26,442
Gelligaer
Pop. 17,376
Gorseinon
Pop. 20,581
Haverfordwest
Pop. 14,596
Hawarden
Pop. 25,513
Holyhead
Pop. 11,431
Llandudno
Pop. 15,371
Llantrisant
Pop. 14,422
Llantwit Major
Pop. 14,384
Maesteg
Pop. 21,001
Milford Haven
Pop. 13,582
Mold
Pop. 10,058
Monmouth
Pop. 10,110
Mountain Ash
Pop. 11,230
Nelson
Pop. 12,857
Newtown
Pop. 11,362
Penarth
Pop. 23,437
Porthcawl
Pop. 15,672
Prestatyn
Pop. 19,085
Pyle
Pop. 13,701
Rhiwbina
Pop. 11,369
Rhosllannerchrugog
Pop. 25,362
Rhyl
Pop. 25,874
Risca
Pop. 20,443
Tredegar
Pop. 14,855
Treharris
Pop. 12,352
Whitchurch
Pop. 13,974
Ystalyfera
Pop. 10,218