United Utilities serves Preston from Thirlmere and Haweswater in the Lake District, via the Pennine aqueduct.
According to TapWater.uk's analysis, Preston scores 9.6/10 for drinking water quality in 2026. Water is supplied by United Utilities and has been tested for 15 contaminants across 7 postcode districts.
Average score
9.6/10
UK avg: 9.0/10
Areas tested
7
Issues flagged
0
PFAS detected
None
Yes, Preston tap water is safe to drink. Based on 7 areas tested, Preston has an average water quality score of 9.6/10 (above the UK average of 9.0/10). No contaminants were found above recommended levels. Water is supplied by United Utilities. United Utilities serves Preston from Thirlmere and Haweswater in the Lake District, via the Pennine aqueduct.
All postcode districts in Preston, ranked by water quality score.
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Yes, Preston tap water is generally safe to drink. Across 7 areas tested, the average water quality score is 9.6/10. United Utilities serves Preston from Thirlmere and Haweswater in the Lake District, via the Pennine aqueduct.
Yes, you can drink tap water in Preston. It is regulated to UK drinking water standards, and across 7 tested areas the average water quality score is 9.6/10. Enter your postcode for the readings in your exact area.
No contaminants were flagged above recommended levels across Preston. All tested areas passed on the parameters measured.
Hardness data is not yet available for Preston. Enter your postcode for detailed water quality data.
The areas with the best water quality in Preston are PR0 (9.7/10), PR11 (9.7/10), PR26 (9.7/10).
Water in Preston is supplied by United Utilities. United Utilities serves Preston from Thirlmere and Haweswater in the Lake District, via the Pennine aqueduct.
No PFAS (forever chemicals) have been detected in any of the 7 areas tested in Preston.
Free live water quality widget for PR0: 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 Preston.