| № | 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 |
|
2009-11-09 | 6700 | - | 91 | 7.7 | 21.0 | HIGH | Med | HIGH | HIGH |
| 1 | 182718 | 2009-11-23 | 120300 | - | 40 | 8.1 | 20.0 | HIGH | HIGH | HIGH | HIGH | |
| 1 | 182718 | 2009-12-07 | 1100 | - | 7 | 7.0 | 20.0 | HIGH | low | HIGH | Med | |
| 1 | 182718 | 2009-12-21 | 3000 | - | 7 | 7.8 | 21.0 | HIGH | Med | HIGH | Med | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2009-11-09 | 8100 | - | 92 | 7.7 | 21.0 | HIGH | Med | HIGH | HIGH |
| 2 | 188130 | 2009-11-18 | - | 200 | - | 8.9 | - | HIGH | low | Med | low | |
| 2 | 188130 | 2009-11-23 | 86600 | - | 41 | 8.0 | 21.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 188130 | 2009-12-07 | 51700 | - | 13 | 7.4 | 20.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 188130 | 2009-12-21 | 13800 | - | 47 | 7.9 | 22.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2009-11-09 | 225 | - | 5 | 7.6 | 21.0 | HIGH | low | Med | low |
| 3 | 188131 | 2009-11-23 | 228 | - | 6 | 7.6 | 20.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2009-12-07 | 236 | - | 2 | 6.9 | 20.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2009-12-21 | 700 | - | 4 | 7.7 | 22.0 | HIGH | low | HIGH | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2009-11-09 | 56 | - | 18 | 7.6 | 22.0 | HIGH | low | low | low |
| 4 | 188132 | 2009-11-23 | 30 | - | 19 | 8.8 | 21.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-12-07 | 41 | - | 8 | 8.0 | 22.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-12-21 | 100 | - | 15 | 8.5 | 21.0 | HIGH | low | low | low | |
 |
 |