Is Truro Water Hard or Soft?

Slightly Hard at 91 ppm • Cornwall, South West

Slightly Hard

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.

Water Hardness by Postcode in Truro

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

Water Companies Serving Truro

South West Water

Average hardness: 80 ppm (Slightly Hard) • 129 postcodes served

Water Hardness Guides

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

Get Water Hardness Updates

Be notified when your water company reports changes to hardness levels.