According to TapWater.uk's analysis, Liverpool scores 9.3/10 for drinking water quality in 2026. Water is supplied by United Utilities and has been tested for 16 contaminants across 21 postcode districts.
9.3 / 10
21 areas tested · 0 flagged · UK average 9.0
Yes, Liverpool tap water is safe to drink. Based on 21 areas tested, Liverpool 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 Liverpool with water from Lake Vyrnwy in Wales and local reservoirs.
All postcode districts in Liverpool, ranked by water quality score.
| Postcode | Area | Score | Flagged | Supplier |
|---|---|---|---|---|
| L11 | Liverpool | 9.2 | 0 | United Utilities |
| L12 | Liverpool | 9.2 | 0 | United Utilities |
| L25 | Liverpool | 9.2 | 0 | United Utilities |
| L27 | Liverpool | 9.2 | 0 | United Utilities |
| L9 | Liverpool | 9.2 | 0 | United Utilities |
| L1 | Liverpool | 9.3 | 0 | United Utilities |
| L14 | Liverpool | 9.3 | 0 | United Utilities |
| L15 | Liverpool | 9.3 | 0 | United Utilities |
| L16 | Liverpool | 9.3 | 0 | United Utilities |
| L17 | Liverpool | 9.3 | 0 | United Utilities |
| L18 | Liverpool | 9.3 | 0 | United Utilities |
| L19 | Liverpool | 9.3 | 0 | United Utilities |
| L2 | Liverpool | 9.3 | 0 | United Utilities |
| L4 | Liverpool | 9.3 | 0 | United Utilities |
| L8 | Liverpool | 9.3 | 0 | United Utilities |
| L13 | Liverpool | 9.4 | 0 | United Utilities |
| L24 | Liverpool | 9.4 | 0 | United Utilities |
| L3 | Liverpool | 9.4 | 0 | United Utilities |
| L5 | Liverpool | 9.4 | 0 | United Utilities |
| L6 | Liverpool | 9.5 | 0 | United Utilities |
| L7 | Liverpool | 9.5 | 0 | United Utilities |
75mg of limescale minerals in every litre, on average across Liverpool
From 63 mg/L in L8 to 91 mg/L in L11. Hard starts at 180, very hard at 250.
| District | Area | mg/L | Hardness |
|---|---|---|---|
| L11 | Liverpool | 91 | moderately soft |
| L27 | Liverpool | 91 | moderately soft |
| L19 | Liverpool | 89 | moderately soft |
| L24 | Liverpool | 89 | moderately soft |
| L9 | Liverpool | 89 | moderately soft |
| L16 | Liverpool | 81 | moderately soft |
| L25 | Liverpool | 81 | moderately soft |
| L14 | Liverpool | 72 | moderately soft |
| L4 | Liverpool | 71 | moderately soft |
| L5 | Liverpool | 71 | moderately soft |
| L6 | Liverpool | 71 | moderately soft |
| L13 | Liverpool | 70 | moderately soft |
| L15 | Liverpool | 70 | moderately soft |
| L17 | Liverpool | 70 | moderately soft |
| L18 | Liverpool | 70 | moderately soft |
| L1 | Liverpool | 68 | moderately soft |
| L2 | Liverpool | 68 | moderately soft |
| L3 | Liverpool | 68 | moderately soft |
| L12 | Liverpool | 63 | moderately soft |
| L7 | Liverpool | 63 | moderately soft |
| L8 | Liverpool | 63 | moderately soft |
Main water supplier: United Utilities (21 postcodes)
None of the 5 rivers and waters that Liverpool 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 |
|---|---|---|
| Tue Brook | Moderate | L4, L5, L6, L7, L9, L13, L15 |
| Mersey | Moderate | L1, L2, L3, L8, L17, L19 |
| Netherley Brook | Moderate | L16, L18, L25, L27 |
| Alt | Moderate | L11, L12, L14 |
| Ditton Brook (Halewood to Mersey Estuary) | Moderate | L24 |
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.
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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, Liverpool tap water is generally safe to drink. Across 21 areas tested, the average water quality score is 9.3/10. United Utilities supplies Liverpool with water from Lake Vyrnwy in Wales and local reservoirs.
Yes, you can drink tap water in Liverpool. It is regulated to UK drinking water standards, and across 21 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 Liverpool. All tested areas passed on the parameters measured.
Water in Liverpool has an average hardness of 75 mg/L CaCO₃, which is classified as moderately soft. It ranges from 63 mg/L in L8 to 91 mg/L in L11. This is a moderate hardness level.
The areas with the best water quality in Liverpool are L6 (9.5/10), L7 (9.5/10), L13 (9.4/10).
Water in Liverpool is supplied by United Utilities. United Utilities supplies Liverpool with water from Lake Vyrnwy in Wales and local reservoirs.
No PFAS (forever chemicals) have been detected in any of the 21 areas tested in Liverpool.
Free live water quality widget for L6: 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 Liverpool.
Based on water quality data from 21 postcode districts in Liverpool. Data from your water company via the Stream Water Data Portal and the Environment Agency. See our methodology for how scores are calculated.