London vs Cardiff
Water quality comparison
According to TapWater.uk, London scores 8.4/10 and Cardiff scores 9.5/10 for drinking water quality. Cardiff has the better water.
Cardiff has better water quality by 1.1 points
Key differences
Safety score
Cardiff scores 1.1 points higher than London.
Contaminants flagged
London has 70 issues flagged vs 0 in Cardiff.
Water supplier
London is supplied by Thames Water, while Cardiff uses Dŵr Cymru Welsh Water.
Top concerns by city
London
Nitrite51 areas
Coliform Bacteria16 areas
E. coli2 areas
Lead1 area
Cardiff
No contaminants flagged
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