South West Water supplies Plymouth from Burrator Reservoir on Dartmoor, a source used since Victorian times.
According to TapWater.uk's analysis, Plymouth scores 9.5/10 for drinking water quality in 2026. Water is supplied by South West Water and has been tested for 16 contaminants across 8 postcode districts.
Average score
9.5/10
UK avg: 9.0/10
Areas tested
8
Issues flagged
0
PFAS detected
None
Yes, Plymouth tap water is safe to drink. Based on 8 areas tested, Plymouth has an average water quality score of 9.5/10 (above the UK average of 9.0/10). No contaminants were found above recommended levels. Water is supplied by South West Water. South West Water supplies Plymouth from Burrator Reservoir on Dartmoor, a source used since Victorian times.
All postcode districts in Plymouth, ranked by water quality score.
Learn more about the water quality issues relevant to this area.
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Yes, Plymouth tap water is generally safe to drink. Across 8 areas tested, the average water quality score is 9.5/10. South West Water supplies Plymouth from Burrator Reservoir on Dartmoor, a source used since Victorian times.
Yes, you can drink tap water in Plymouth. It is regulated to UK drinking water standards, and across 8 tested areas the average water quality score is 9.5/10. Enter your postcode for the readings in your exact area.
No contaminants were flagged above recommended levels across Plymouth. All tested areas passed on the parameters measured.
Water in Plymouth has an average hardness of 76 mg/L CaCO₃, which is classified as moderately soft. This is a moderate hardness level.
The areas with the best water quality in Plymouth are PL1 (9.5/10), PL2 (9.5/10), PL3 (9.5/10).
Water in Plymouth is supplied by South West Water. South West Water supplies Plymouth from Burrator Reservoir on Dartmoor, a source used since Victorian times.
No PFAS (forever chemicals) have been detected in any of the 8 areas tested in Plymouth.
Free live water quality widget for PL1: paste these two lines anywhere on your page. It stays up to date by itself and credits TapWater.uk automatically.
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<script src="https://www.tapwater.uk/widget.js" async></script>Get a detailed water quality report for your exact area in Plymouth.