London vs Bristol
Water quality comparison
According to TapWater.uk, London scores 8.3/10 and Bristol scores 8.7/10 for drinking water quality. Bristol has the better water.
LondonThames Water · very hard water8.3 out of 10 · 79 flagged across 58 areasBristolBristol Water · hard water8.7 out of 10 · 1 flagged across 23 areas · PFAS in 2
Bristol has better water quality.
Key differences
- Contaminants flaggedLondon has 79 issues flagged vs 1 in Bristol.
- Water supplierLondon is supplied by Thames Water, while Bristol uses Bristol Water.
- Water hardnessLondon has very hard water (274 mg/L), Bristol has hard water (233 mg/L).
- PFAS detectionPFAS detected in 0 areas in London vs 2 areas in Bristol.
Top concerns by city
London
- Nitrite57 areas
- Coliform Bacteria15 areas
- E. coli4 areas
- Lead2 areas
Bristol
- Ammonia1 area
Full city reports
London water reportBristol water report
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More comparisons
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Based on water quality data from 81 postcode districts across London and Bristol. See our methodology for how scores are calculated.