| № | Site [ view Middle Vaal sites in Google Earth ] |
Plot all data | Date | MPN, or cfu / 100mL |
Turb. NTU |
pH | Temp. oC |
Risk based on E. coli if recorded, otherwise on faecal coliforms | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| E. coli | faecal coliforms | drinking- no treatment |
drinking- limited treatment |
full or partial contact |
irrigation- crops eaten raw |
|||||||
| 1 | 182718 [2-month plot]
Skoonspruit D/S from Orkney Sewage Works |
|
2008-11-12 | 8800 | - | 5 | 8.0 | 20.0 | HIGH | Med | HIGH | HIGH |
| 1 | 182718 | 2008-12-01 | 921 | - | 5 | 7.3 | 20.0 | HIGH | low | HIGH | low | |
| 1 | 182718 | 2008-12-11 | 3000 | - | 3 | 7.3 | 22.0 | HIGH | Med | HIGH | Med | |
| 1 | 182718 | 2008-12-23 | 900 | - | 3 | 7.2 | 24.0 | HIGH | low | HIGH | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2008-11-12 | 242000 | - | 198 | 8.1 | 20.0 | HIGH | HIGH | HIGH | HIGH |
| 2 | 188130 | 2008-12-01 | 308 | - | 27 | 8.8 | 20.0 | HIGH | low | Med | low | |
| 2 | 188130 | 2008-12-11 | 1300 | - | 6 | 8.1 | 22.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2008-12-23 | 5600 | - | 60 | 7.7 | 24.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2008-11-12 | 1000 | - | 10 | 8.1 | 20.0 | HIGH | low | HIGH | Med |
| 3 | 188131 | 2008-12-01 | 133 | - | 49 | 7.5 | 21.0 | HIGH | low | low | low | |
| 3 | 188131 | 2008-12-11 | 345 | - | 16 | 7.4 | 22.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2008-12-23 | 900 | - | 18 | 7.7 | 24.0 | HIGH | low | HIGH | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2008-11-12 | 81 | - | 11 | 8.5 | 22.0 | HIGH | low | low | low |
| 4 | 188132 | 2008-12-01 | 173 | - | 15 | 7.9 | 23.0 | HIGH | low | low | low | |
| 4 | 188132 | 2008-12-11 | 31 | - | 8 | 8.3 | 24.0 | HIGH | low | low | low | |
| 4 | 188132 | 2008-12-23 | 15 | - | 10 | 8.9 | 26.0 | HIGH | low | low | low | |
 |
 |