| Perceived quality | Improved source | Unimproved source | All | Chi-square value |
| Clean | 213 (66.1) | 25 (26.3) | 238 (57.1) | χ2 = 115.062 df = 5 p = 0.000 |
| Has sand in it | 1 (0.3) | 16 (16.8) | 17 (4.1) | |
| Has small particles | 55 (17.1) | 50 (52.6) | 105 (25.2) | |
| Has some taste | 22 (6.8) | 1 (1.1) | 23 (5.5) | |
| Has odour | 8 (2.5) | 0 (0.0) | 8 (1.9) | |
| Others | 23 (7.1) | 3 (3.2) | 26 (6.2) |