Merseyside · North West

Is Liverpool water hard or soft?

Slightly Hard at 73 ppm · 40 postcode districts

  • Supplier United Utilities
  • County Merseyside
  • Postcodes 40
Area average
73
ppm CaCO₃
Slightly Hard
Soft
Moderate
Hard
Very hard
0100200300400+

Liverpool water hardness at a glance

  1. Liverpool water is slightly hard, averaging 73 ppm across 40 postcode districts.
  2. That is 134 ppm below the UK average of 207 ppm.
  3. The hardest district is L19 at 131 ppm; the softest is L20 at 34 ppm.
  4. The supplier is United Utilities.
  5. Limescale builds slowly at this level, so a softener is not usually needed.

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Be notified when water companies in Liverpool report changes to hardness levels.

The average water hardness in Liverpool is 73 ppm, classified as slightly hard. Liverpool is served by United Utilities, covering 40 postcode districts across Merseyside in the North West region.

Hardness varies across the area. See the table below for a breakdown by postcode district. L19 has the hardest water at 131 ppm, while L20 is the softest at 34 ppm.

By postcode

Water Hardness by Postcode in Liverpool

Sorted by hardness. Tap a postcode for full details.

Postcode Water Company Hardness PPM Level
L19 United Utilities
131
131 ppm Moderately Hard
L18 United Utilities
130
130 ppm Moderately Hard
L17 United Utilities
129
129 ppm Moderately Hard
L16 United Utilities
128
128 ppm Moderately Hard
L15 United Utilities
127
127 ppm Moderately Hard
L14 United Utilities
126
126 ppm Moderately Hard
L13 United Utilities
125
125 ppm Moderately Hard
L12 United Utilities
124
124 ppm Moderately Hard
L11 United Utilities
123
123 ppm Moderately Hard
L10 United Utilities
122
122 ppm Moderately Hard
L40 United Utilities
100
100 ppm Slightly Hard
L39 United Utilities
76
76 ppm Slightly Hard
L38 United Utilities
75
75 ppm Slightly Hard
L37 United Utilities
74
74 ppm Slightly Hard
L36 United Utilities
73
73 ppm Slightly Hard
L35 United Utilities
72
72 ppm Slightly Hard
L34 United Utilities
71
71 ppm Slightly Hard
L33 United Utilities
70
70 ppm Slightly Hard
L32 United Utilities
69
69 ppm Slightly Hard
L31 United Utilities
68
68 ppm Slightly Hard
L30 United Utilities
67
67 ppm Slightly Hard
L9 United Utilities
54
54 ppm Soft
L8 United Utilities
53
53 ppm Soft
L7 United Utilities
52
52 ppm Soft
L6 United Utilities
51
51 ppm Soft
L5 United Utilities
50
50 ppm Soft
L4 United Utilities
49
49 ppm Soft
L3 United Utilities
48
48 ppm Soft
L2 United Utilities
47
47 ppm Soft
L1 United Utilities
46
46 ppm Soft
L29 United Utilities
43
43 ppm Soft
L28 United Utilities
42
42 ppm Soft
L27 United Utilities
41
41 ppm Soft
L26 United Utilities
40
40 ppm Soft
L25 United Utilities
39
39 ppm Soft
L24 United Utilities
38
38 ppm Soft
L23 United Utilities
37
37 ppm Soft
L22 United Utilities
36
36 ppm Soft
L21 United Utilities
35
35 ppm Soft
L20 United Utilities
34
34 ppm Soft
Suppliers

Water Companies Serving Liverpool

Tap for full coverage area and hardness data.

United Utilities

77 ppm Slightly Hard

Each water company publishes its own hardness data, so you can cross-check the Liverpool figures here against the published hardness data from United Utilities Water Ltd.

Water Hardness Guides

Learn more about water hardness and how to manage it.

What Is Water Hardness? Effects Solutions Water Softeners Limescale Removal

Test Your Water in Liverpool

At 73 ppm, your water is slightly hard. A home testing kit lets you verify the exact hardness and check for other contaminants.

TESPERT 16-in-1 Water Testing Kit

Home water test strips that check hardness, pH, chlorine, lead, and 12 other parameters. Results in around 60 seconds. 125 strips per pack.

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FAQ

Common questions about Liverpool water

Is Liverpool water hard or soft?
Liverpool is classified as slightly hard, averaging 73 ppm across 40 postcode districts. Limescale build-up is minimal at this level, though individual postcodes vary.
Which postcode in Liverpool has the hardest water?
L19 has the hardest water in Liverpool at 131 ppm, while L20 is the softest at 34 ppm. See the full table above for every district.
Which water company supplies Liverpool?
Liverpool is supplied by United Utilities, covering 40 postcode districts across Merseyside.
Is tap water in Liverpool safe to drink?
Hardness is not a safety issue: the World Health Organization sets no health-based limit for water hardness, so hard and soft water are both fine to drink. Drinking water quality is regulated by the Drinking Water Inspectorate in England and Wales and the Drinking Water Quality Regulator in Scotland, and your water company publishes test results for your area.
Does Liverpool have any harder-water postcodes?
L19 is the hardest district at 131 ppm (moderately hard), though most of Liverpool averages 73 ppm.
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