| Group variables | Total cfu/mL | Mean cfu/mL | Dry days cfu/mL | Rainy days cfu/mL |
| Sites | ||||
| Site 1 (domestic use) | 2.79 × 105 | 5.2 × 103 | 1.2 × 105 | 1.5 × 105 |
| Site 2 (settlements) | 8.8 × 104 | 1.6 × 103 | 4.3 × 104 | 4.5 × 104 |
| Site 3 (virgin land) | 5.0 × 104 | 9.5 × 102 | 2.4 × 104 | 2.6 × 104 |
| Site 4 (sewerage effluent) | 5.0 × 105 | 9.5 × 103 | 2.0 × 105 | 3.0 × 105 |
| Site 5 (near road and farming) | 1.0 × 105 | 1.9 × 103 | 5.0 × 104 | 5.2 × 104 |
| Site 6 (industrial zone) | 4.0 × 105 | 7.6 × 103 | 2.0 × 105 | 2.0 × 105 |