WaterWater Hardness in Exeter
Devon, South West • 33 postcode districts
Slightly Hard
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.
Water Hardness by Postcode in Exeter
| Postcode | Water Company | Hardness | PPM | Level |
|---|---|---|---|---|
| EX39 | South West Water | 138 ppm | Moderately Hard | |
| EX38 | South West Water | 137 ppm | Moderately Hard | |
| EX37 | South West Water | 136 ppm | Moderately Hard | |
| EX36 | South West Water | 135 ppm | Moderately Hard | |
| EX35 | South West Water | 134 ppm | Moderately Hard | |
| EX34 | South West Water | 133 ppm | Moderately Hard | |
| EX33 | South West Water | 132 ppm | Moderately Hard | |
| EX32 | South West Water | 131 ppm | Moderately Hard | |
| EX31 | South West Water | 130 ppm | Moderately Hard | |
| EX24 | South West Water | 100 ppm | Slightly Hard | |
| EX23 | South West Water | 99 ppm | Slightly Hard | |
| EX22 | South West Water | 98 ppm | Slightly Hard | |
| EX21 | South West Water | 97 ppm | Slightly Hard | |
| EX20 | South West Water | 96 ppm | Slightly Hard | |
| EX9 | South West Water | 83 ppm | Slightly Hard | |
| EX8 | South West Water | 82 ppm | Slightly Hard | |
| EX7 | South West Water | 81 ppm | Slightly Hard | |
| EX6 | South West Water | 80 ppm | Slightly Hard | |
| EX5 | South West Water | 79 ppm | Slightly Hard | |
| EX4 | South West Water | 78 ppm | Slightly Hard | |
| EX3 | South West Water | 77 ppm | Slightly Hard | |
| EX2 | South West Water | 76 ppm | Slightly Hard | |
| EX1 | South West Water | 75 ppm | Slightly Hard | |
| EX19 | South West Water | 72 ppm | Slightly Hard | |
| EX18 | South West Water | 71 ppm | Slightly Hard | |
| EX17 | South West Water | 70 ppm | Slightly Hard | |
| EX16 | South West Water | 69 ppm | Slightly Hard | |
| EX15 | South West Water | 68 ppm | Slightly Hard | |
| EX14 | South West Water | 67 ppm | Slightly Hard | |
| EX13 | South West Water | 66 ppm | Slightly Hard | |
| EX12 | South West Water | 65 ppm | Slightly Hard | |
| EX11 | South West Water | 64 ppm | Slightly Hard | |
| EX10 | South West Water | 63 ppm | Slightly Hard |
Water Companies Serving Exeter
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