| Foul Outlets (Nr) (From Field Visits) | Nr of Houses | Greywater entering upstream of the first upstream solid/WC discharge | Greywater entering downstream of the last downstream solid/WC discharge |
| 8 | 4 | 7.016 | 12.608 |
| 7 | 19 | 18.065 | 6.344 |
| 6 | 43 | 12.254 | 8.210 |
| 5 | 28 | 27.650 | 15.569 |
| 4 | 15 | 30.542 | 24.035 |
| 3 | 1 | 65.215 | 34.785 |
| 2 | 2 | 50.000 | 50.000 |
| 1 | 0 | NA | NA |
| Average= | 30.106% | 21.650% | |
| Standard Deviation= | 20.942 | 15.893 | |