London vs Manchester
Water quality comparison
According to TapWater.uk, London scores 8.3/10 and Manchester scores 9.4/10 for drinking water quality. Manchester has the better water.
LondonThames Water · very hard water8.3 out of 10 · 79 flagged across 58 areasManchesterUnited Utilities · hard water9.4 out of 10 · 0 flagged across 27 areas
Manchester has better water quality, by 1.2 points.
Key differences
- Safety scoreManchester scores 1.2 points higher than London.
- Contaminants flaggedLondon has 79 issues flagged vs 0 in Manchester.
- Water supplierLondon is supplied by Thames Water, while Manchester uses United Utilities.
- Water hardnessLondon has very hard water (274 mg/L), Manchester has hard water (235 mg/L).
Top concerns by city
London
- Nitrite57 areas
- Coliform Bacteria15 areas
- E. coli4 areas
- Lead2 areas
Manchester
No contaminants flagged
Full city reports
London water reportManchester water report
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More comparisons
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Based on water quality data from 85 postcode districts across London and Manchester. See our methodology for how scores are calculated.