Devon · South West

Is Exeter water hard or soft?

Slightly Hard at 93 ppm · 33 postcode districts

  • Supplier South West Water
  • County Devon
  • Postcodes 33
Area average
93
ppm CaCO₃
Slightly Hard
Soft
Moderate
Hard
Very hard
0100200300400+

The average water hardness in Exeter is 93 ppm, classified as slightly hard. Exeter is served by South West Water, covering 33 postcode districts across Devon in the South West region.

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

By postcode

Water Hardness by Postcode in Exeter

Sorted by hardness — tap a postcode for full details.

Postcode Water Company Hardness PPM Level
EX39 South West Water
138
138 ppm Moderately Hard
EX38 South West Water
137
137 ppm Moderately Hard
EX37 South West Water
136
136 ppm Moderately Hard
EX36 South West Water
135
135 ppm Moderately Hard
EX35 South West Water
134
134 ppm Moderately Hard
EX34 South West Water
133
133 ppm Moderately Hard
EX33 South West Water
132
132 ppm Moderately Hard
EX32 South West Water
131
131 ppm Moderately Hard
EX31 South West Water
130
130 ppm Moderately Hard
EX24 South West Water
100
100 ppm Slightly Hard
EX23 South West Water
99
99 ppm Slightly Hard
EX22 South West Water
98
98 ppm Slightly Hard
EX21 South West Water
97
97 ppm Slightly Hard
EX20 South West Water
96
96 ppm Slightly Hard
EX9 South West Water
83
83 ppm Slightly Hard
EX8 South West Water
82
82 ppm Slightly Hard
EX7 South West Water
81
81 ppm Slightly Hard
EX6 South West Water
80
80 ppm Slightly Hard
EX5 South West Water
79
79 ppm Slightly Hard
EX4 South West Water
78
78 ppm Slightly Hard
EX3 South West Water
77
77 ppm Slightly Hard
EX2 South West Water
76
76 ppm Slightly Hard
EX1 South West Water
75
75 ppm Slightly Hard
EX19 South West Water
72
72 ppm Slightly Hard
EX18 South West Water
71
71 ppm Slightly Hard
EX17 South West Water
70
70 ppm Slightly Hard
EX16 South West Water
69
69 ppm Slightly Hard
EX15 South West Water
68
68 ppm Slightly Hard
EX14 South West Water
67
67 ppm Slightly Hard
EX13 South West Water
66
66 ppm Slightly Hard
EX12 South West Water
65
65 ppm Slightly Hard
EX11 South West Water
64
64 ppm Slightly Hard
EX10 South West Water
63
63 ppm Slightly Hard
Suppliers

Water Companies Serving Exeter

Tap for full coverage area and hardness data.

South West Water

80 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 Exeter

At 93 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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