West Wales · Wales

Is Swansea water hard or soft?

Slightly Hard at 72 ppm · 51 postcode districts

  • Supplier Welsh Water (Dwr Cymru)
  • County West Wales
  • Postcodes 51
Area average
72
ppm CaCO₃
Slightly Hard
Soft
Moderate
Hard
Very hard
0100200300400+

The average water hardness in Swansea is 72 ppm, classified as slightly hard. Swansea is served by Welsh Water (Dwr Cymru), covering 51 postcode districts across West Wales in the Wales region.

Hardness varies across the area — see the table below for a breakdown by postcode district.

By postcode

Water Hardness by Postcode in Swansea

Sorted by hardness — tap a postcode for full details.

Postcode Water Company Hardness PPM Level
SA39 Welsh Water (Dwr Cymru)
117
117 ppm Slightly Hard
SA38 Welsh Water (Dwr Cymru)
116
116 ppm Slightly Hard
SA37 Welsh Water (Dwr Cymru)
115
115 ppm Slightly Hard
SA69 Welsh Water (Dwr Cymru)
115
115 ppm Slightly Hard
SA36 Welsh Water (Dwr Cymru)
114
114 ppm Slightly Hard
SA68 Welsh Water (Dwr Cymru)
114
114 ppm Slightly Hard
SA35 Welsh Water (Dwr Cymru)
113
113 ppm Slightly Hard
SA67 Welsh Water (Dwr Cymru)
113
113 ppm Slightly Hard
SA34 Welsh Water (Dwr Cymru)
112
112 ppm Slightly Hard
SA66 Welsh Water (Dwr Cymru)
112
112 ppm Slightly Hard
SA33 Welsh Water (Dwr Cymru)
111
111 ppm Slightly Hard
SA65 Welsh Water (Dwr Cymru)
111
111 ppm Slightly Hard
SA32 Welsh Water (Dwr Cymru)
110
110 ppm Slightly Hard
SA64 Welsh Water (Dwr Cymru)
110
110 ppm Slightly Hard
SA31 Welsh Water (Dwr Cymru)
109
109 ppm Slightly Hard
SA63 Welsh Water (Dwr Cymru)
109
109 ppm Slightly Hard
SA62 Welsh Water (Dwr Cymru)
108
108 ppm Slightly Hard
SA61 Welsh Water (Dwr Cymru)
107
107 ppm Slightly Hard
SA20 Welsh Water (Dwr Cymru)
75
75 ppm Slightly Hard
SA9 Welsh Water (Dwr Cymru)
66
66 ppm Slightly Hard
SA8 Welsh Water (Dwr Cymru)
65
65 ppm Slightly Hard
SA7 Welsh Water (Dwr Cymru)
64
64 ppm Slightly Hard
SA6 Welsh Water (Dwr Cymru)
63
63 ppm Slightly Hard
SA5 Welsh Water (Dwr Cymru)
62
62 ppm Slightly Hard
SA4 Welsh Water (Dwr Cymru)
61
61 ppm Slightly Hard
SA3 Welsh Water (Dwr Cymru)
60
60 ppm Soft
SA2 Welsh Water (Dwr Cymru)
59
59 ppm Soft
SA1 Welsh Water (Dwr Cymru)
58
58 ppm Soft
SA19 Welsh Water (Dwr Cymru)
51
51 ppm Soft
SA18 Welsh Water (Dwr Cymru)
50
50 ppm Soft
SA17 Welsh Water (Dwr Cymru)
49
49 ppm Soft
SA16 Welsh Water (Dwr Cymru)
48
48 ppm Soft
SA48 Welsh Water (Dwr Cymru)
48
48 ppm Soft
SA15 Welsh Water (Dwr Cymru)
47
47 ppm Soft
SA47 Welsh Water (Dwr Cymru)
47
47 ppm Soft
SA14 Welsh Water (Dwr Cymru)
46
46 ppm Soft
SA46 Welsh Water (Dwr Cymru)
46
46 ppm Soft
SA13 Welsh Water (Dwr Cymru)
45
45 ppm Soft
SA45 Welsh Water (Dwr Cymru)
45
45 ppm Soft
SA12 Welsh Water (Dwr Cymru)
44
44 ppm Soft
SA44 Welsh Water (Dwr Cymru)
44
44 ppm Soft
SA11 Welsh Water (Dwr Cymru)
43
43 ppm Soft
SA43 Welsh Water (Dwr Cymru)
43
43 ppm Soft
SA10 Welsh Water (Dwr Cymru)
42
42 ppm Soft
SA42 Welsh Water (Dwr Cymru)
42
42 ppm Soft
SA41 Welsh Water (Dwr Cymru)
41
41 ppm Soft
SA73 Welsh Water (Dwr Cymru)
41
41 ppm Soft
SA40 Welsh Water (Dwr Cymru)
40
40 ppm Soft
SA72 Welsh Water (Dwr Cymru)
40
40 ppm Soft
SA71 Welsh Water (Dwr Cymru)
39
39 ppm Soft
SA70 Welsh Water (Dwr Cymru)
38
38 ppm Soft
Suppliers

Water Companies Serving Swansea

Tap for full coverage area and hardness data.

Welsh Water (Dwr Cymru)

68 ppm Slightly Hard

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 Swansea

At 72 ppm, your water is slightly hard. A home testing kit lets you verify the exact hardness and check for other contaminants.

SJ WAVE 16-in-1 Water Testing Kit

From ~£10

Quick home water test strips — checks hardness, pH, chlorine, lead, and 12 other parameters. Results in 60 seconds. 100 strips per pack.

View on Amazon

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