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 16 contaminants across 6 postcode districts.
9.3 / 10
6 areas tested · 0 flagged · UK average 9.0
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). No contaminants were found above recommended levels. Water is supplied by United Utilities. United Utilities supplies Warrington from Lake District and Peak District reservoirs via an extensive treatment network.
All postcode districts in Warrington, ranked by water quality score.
115mg of limescale minerals in every litre, on average across Warrington
From 59 mg/L in WA3 to 205 mg/L in WA2. Hard starts at 180, very hard at 250.
Main water supplier: United Utilities (6 postcodes)
None of the 6 rivers and waters that Warrington drains into is rated good by the Environment Agency. All of them fail the chemical test, as every river in England does, because of long-lasting pollutants such as mercury and PFOS. This describes the rivers, not your tap water.
| River or water | Ecological health | Postcode districts |
|---|---|---|
| Glaze | Poor | WA3 |
| Bollin (Ashley Mill to Manchester Ship Canal) | Moderate | WA13 |
| Mersey | Moderate | WA4 |
| Mersey (Bollin confluence to Howley Weir) including Padgate Brook. | Moderate | WA1 |
| Sankey Brook (Rainford Brook to Mersey) | Moderate | WA2 |
| Whittle Brook (Mersey Estuary) | Moderate | WA5 |
Environment Agency classification, 2025. River health across England
Taste, chlorine and hardness bother people even where the water passes its tests. These are the three fixes our readers pick most: a jug for drinking water, a shower filter, and a reverse osmosis unit that needs no plumbing. Check your own postcode above to see which one your water needs.
The jug for cleaner drinking water
ZeroWater 12-Cup Ready-Pour
Jug Filter · NSF/ANSI 53, NSF/ANSI 401
Typical price
£40approx.
Affiliate link: we may earn a commission at no extra cost to you.
For dry skin and hair after a shower
Jolie Filtered Showerhead
Shower Filter
Typical price
£85approx.
Affiliate link: we may earn a commission at no extra cost to you.
Reverse osmosis without a plumber
Osmio Zero 2.0 Countertop RO
Reverse Osmosis
Typical price
£495approx.
Affiliate link: we may earn a commission at no extra cost to you.
Affiliate link: we may earn a commission at no extra cost to you. How recommendations are funded
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.
No contaminants were flagged above recommended levels across Warrington. All tested areas passed on the parameters measured.
Water in Warrington has an average hardness of 115 mg/L CaCO₃, which is classified as moderately soft. It ranges from 59 mg/L in WA3 to 205 mg/L in WA2. This is a moderate hardness level.
The areas with the best water quality in Warrington are WA2 (9.4/10), WA3 (9.4/10), WA1 (9.3/10).
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 WA2: 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 Warrington.
Based on water quality data from 6 postcode districts in Warrington. Data from your water company via the Stream Water Data Portal and the Environment Agency. See our methodology for how scores are calculated.