| Hardness | Remark on Quality | No of Samples | % of Samples |
| 0 - 75 | Soft | 45 | 47.37 |
| 76 - 150 | Moderately Hard | 39 | 41.05 |
| 151 - 300 | Hard | 6 | 6.32 |
| >300 | Very Hard | 5 | 5.26 |