England
United Utilities supplies Warrington from Lake District and Peak District reservoirs via an extensive treatment network.
According to TapWater.uk's analysis, Warrington scores 9.3/10 for drinking water quality in 2026. Water is supplied by United Utilities and has been tested for 15 contaminants across 6 postcode districts.
Average score
9.3/10
UK avg: 9.0/10
Areas tested
6
Issues flagged
1
PFAS detected
None
Yes, Warrington tap water is safe to drink. Based on 6 areas tested, Warrington has an average water quality score of 9.3/10 (above the UK average of 9.0/10). 1 contaminant was flagged above recommended levels across all areas. Water is supplied by United Utilities. United Utilities supplies Warrington from Lake District and Peak District reservoirs via an extensive treatment network.
Contaminants flagged most often across the city.
All postcode districts in Warrington, ranked by water quality score.
Learn more about the water quality issues relevant to this area.
Best Water Filters UK
Every filter type compared on what it actually removes
Is UK Tap Water Safe?
Everything you need to know about tap water safety in the UK
How to Test Your Tap Water
From DIY strips to professional lab analysis
Best Water Filter Jug UK
BRITA vs ZeroWater vs the rest, tested against real data
Yes, Warrington tap water is generally safe to drink. Across 6 areas tested, the average water quality score is 9.3/10. United Utilities supplies Warrington from Lake District and Peak District reservoirs via an extensive treatment network.
Yes, you can drink tap water in Warrington. It is regulated to UK drinking water standards, and across 6 tested areas the average water quality score is 9.3/10. Enter your postcode for the readings in your exact area.
The most commonly flagged contaminants across Warrington are Nitrite (flagged in 1 area). No PFAS were detected.
Water in Warrington has an average hardness of 157 mg/L CaCO₃, which is classified as moderately hard. This is a moderate hardness level.
The areas with the best water quality in Warrington are WA1 (9.6/10), WA4 (9.6/10), WA13 (9.5/10).
Water in Warrington is supplied by United Utilities. United Utilities supplies Warrington from Lake District and Peak District reservoirs via an extensive treatment network.
No PFAS (forever chemicals) have been detected in any of the 6 areas tested in Warrington.
Free live water quality widget for WA1: paste these two lines anywhere on your page. It stays up to date by itself and credits TapWater.uk automatically.
<div data-tapwater-postcode="WA1"></div>
<script src="https://www.tapwater.uk/widget.js" async></script>Get a detailed water quality report for your exact area in Warrington.