Cornwall · South West

Is Truro water hard or soft?

Slightly Hard at 91 ppm · 23 postcode districts

  • Supplier South West Water
  • County Cornwall
  • Postcodes 23
Area average
91
ppm CaCO₃
Slightly Hard
Soft
Moderate
Hard
Very hard
0100200300400+

The average water hardness in Truro is 91 ppm, classified as slightly hard. Truro is served by South West Water, covering 23 postcode districts across Cornwall 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 Truro

Sorted by hardness — tap a postcode for full details.

Postcode Water Company Hardness PPM Level
TR27 South West Water
109
109 ppm Slightly Hard
TR26 South West Water
108
108 ppm Slightly Hard
TR9 South West Water
107
107 ppm Slightly Hard
TR8 South West Water
106
106 ppm Slightly Hard
TR7 South West Water
105
105 ppm Slightly Hard
TR6 South West Water
104
104 ppm Slightly Hard
TR21 South West Water
103
103 ppm Slightly Hard
TR5 South West Water
103
103 ppm Slightly Hard
TR20 South West Water
102
102 ppm Slightly Hard
TR4 South West Water
102
102 ppm Slightly Hard
TR3 South West Water
101
101 ppm Slightly Hard
TR2 South West Water
100
100 ppm Slightly Hard
TR1 South West Water
99
99 ppm Slightly Hard
TR19 South West Water
78
78 ppm Slightly Hard
TR18 South West Water
77
77 ppm Slightly Hard
TR17 South West Water
76
76 ppm Slightly Hard
TR16 South West Water
75
75 ppm Slightly Hard
TR15 South West Water
74
74 ppm Slightly Hard
TR14 South West Water
73
73 ppm Slightly Hard
TR13 South West Water
72
72 ppm Slightly Hard
TR12 South West Water
71
71 ppm Slightly Hard
TR11 South West Water
70
70 ppm Slightly Hard
TR10 South West Water
69
69 ppm Slightly Hard
Suppliers

Water Companies Serving Truro

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 Truro

At 91 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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