| № | 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 |
|
2008-07-21 | 35 | - | 12 | 8.7 | 10.0 | HIGH | low | low | low |
| 1 | 182718 | 2008-08-05 | 238 | - | 3 | 7.6 | 14.0 | HIGH | low | Med | low | |
| 1 | 182718 | 2008-08-19 | 2000 | - | 6 | 7.5 | 16.0 | HIGH | Med | HIGH | Med | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2008-07-21 | 16 | - | 12 | 8.7 | 11.0 | HIGH | low | low | low |
| 2 | 188130 | 2008-08-05 | 200 | - | 14 | 8.7 | 13.0 | HIGH | low | Med | low | |
| 2 | 188130 | 2008-08-19 | 242000 | - | 15 | 7.9 | 16.0 | HIGH | HIGH | HIGH | HIGH | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2008-07-21 | 145 | - | 7 | 7.8 | 10.0 | HIGH | low | low | low |
| 3 | 188131 | 2008-08-05 | 133 | - | 7 | 7.8 | 13.0 | HIGH | low | low | low | |
| 3 | 188131 | 2008-08-19 | 400 | - | 9 | 7.6 | 15.0 | HIGH | low | HIGH | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2008-07-21 | 15 | - | 9 | 8.3 | 10.0 | HIGH | low | low | low |
| 4 | 188132 | 2008-08-05 | 77 | - | 8 | 8.4 | 13.0 | HIGH | low | low | low | |
| 4 | 188132 | 2008-08-19 | 9 | - | 10 | 8.3 | 16.0 | Med | low | low | low | |
 |
 |