Cheshire · North West

Is Chester water hard or soft?

Slightly Hard at 62 ppm · 24 postcode districts

  • Supplier United Utilities
  • County Cheshire
  • Postcodes 24
Area average
62
ppm CaCO₃
Slightly Hard
Soft
Moderate
Hard
Very hard
0100200300400+

Chester water hardness at a glance

  1. Chester water is slightly hard, averaging 62 ppm across 24 postcode districts.
  2. That is 145 ppm below the UK average of 207 ppm.
  3. The hardest district is CH66 at 113 ppm; the softest is CH1 at 35 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 Chester report changes to hardness levels.

The average water hardness in Chester is 62 ppm, classified as slightly hard. Chester is served by United Utilities, covering 24 postcode districts across Cheshire in the North West region.

Hardness varies across the area. See the table below for a breakdown by postcode district. CH66 has the hardest water at 113 ppm, while CH1 is the softest at 35 ppm.

By postcode

Water Hardness by Postcode in Chester

Sorted by hardness. Tap a postcode for full details.

Postcode Water Company Hardness PPM Level
CH66 United Utilities
113
113 ppm Slightly Hard
CH65 United Utilities
112
112 ppm Slightly Hard
CH64 United Utilities
111
111 ppm Slightly Hard
CH63 United Utilities
110
110 ppm Slightly Hard
CH62 United Utilities
109
109 ppm Slightly Hard
CH61 United Utilities
108
108 ppm Slightly Hard
CH60 United Utilities
107
107 ppm Slightly Hard
CH49 United Utilities
50
50 ppm Soft
CH48 United Utilities
49
49 ppm Soft
CH47 United Utilities
48
48 ppm Soft
CH46 United Utilities
47
47 ppm Soft
CH45 United Utilities
46
46 ppm Soft
CH44 United Utilities
45
45 ppm Soft
CH43 United Utilities
44
44 ppm Soft
CH42 United Utilities
43
43 ppm Soft
CH41 United Utilities
42
42 ppm Soft
CH8 United Utilities
42
42 ppm Soft
CH7 United Utilities
41
41 ppm Soft
CH6 United Utilities
40
40 ppm Soft
CH5 United Utilities
39
39 ppm Soft
CH4 United Utilities
38
38 ppm Soft
CH3 United Utilities
37
37 ppm Soft
CH2 United Utilities
36
36 ppm Soft
CH1 United Utilities
35
35 ppm Soft
Suppliers

Water Companies Serving Chester

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 Chester 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 Chester

At 62 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 Chester water

Is Chester water hard or soft?
Chester is classified as slightly hard, averaging 62 ppm across 24 postcode districts. Limescale build-up is minimal at this level, though individual postcodes vary.
Which postcode in Chester has the hardest water?
CH66 has the hardest water in Chester at 113 ppm, while CH1 is the softest at 35 ppm. See the full table above for every district.
Which water company supplies Chester?
Chester is supplied by United Utilities, covering 24 postcode districts across Cheshire.
Is tap water in Chester 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 Chester have any harder-water postcodes?
CH66 is the hardest district at 113 ppm (slightly hard), though most of Chester averages 62 ppm.
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