London vs Sheffield
Water quality comparison
According to TapWater.uk, London scores 8.3/10 and Sheffield scores 9.5/10 for drinking water quality. Sheffield has the better water.
LondonThames Water · very hard water8.3 out of 10 · 79 flagged across 58 areasSheffieldYorkshire Water · moderately hard water9.5 out of 10 · 0 flagged across 17 areas
Sheffield has better water quality, by 1.3 points.
Key differences
- Safety scoreSheffield scores 1.3 points higher than London.
- Contaminants flaggedLondon has 79 issues flagged vs 0 in Sheffield.
- Water supplierLondon is supplied by Thames Water, while Sheffield uses Yorkshire Water.
- Water hardnessLondon has very hard water (274 mg/L), Sheffield has moderately hard water (148 mg/L).
Top concerns by city
London
- Nitrite57 areas
- Coliform Bacteria15 areas
- E. coli4 areas
- Lead2 areas
Sheffield
No contaminants flagged
Full city reports
London water reportSheffield water report
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More comparisons
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Based on water quality data from 75 postcode districts across London and Sheffield. See our methodology for how scores are calculated.