General Water Hardness | ||
|---|---|---|
| 0 to 4 dh | 0 to 70 ppm | Very Soft |
| 4 to 8 dh | 70 to 140 ppm | Soft |
| 8 to 12 dh | 140 to 210 ppm | Medium Hard |
| 12 to 18 dh | 210 to 320 ppm | Fairly Hard |
| 18 to 30 dh | 320 to 530 ppm | Hard |
| >30 dh | >530 ppk | Very Hard |
Click anywhere out of the field for calculation. |
