| № | 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 |
|
2007-11-05 | 300 | - | 7 | 7.7 | 21.0 | HIGH | low | Med | low |
| 1 | 182718 | 2007-11-20 | 600 | - | 6 | 7.6 | 20.0 | HIGH | low | HIGH | low | |
| 1 | 182718 | 2007-12-03 | 5000 | - | 11 | 7.6 | 20.0 | HIGH | Med | HIGH | HIGH | |
| 1 | 182718 | 2007-12-18 | 18000 | - | 51 | 7.9 | 21.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2007-11-05 | 640 | - | 16 | 8.5 | 20.0 | HIGH | low | HIGH | low |
| 2 | 188130 | 2007-11-20 | 1100 | - | 17 | 8.7 | 20.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2007-12-03 | 96000 | - | 23 | 7.5 | 23.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 188130 | 2007-12-18 | 86000 | - | 200 | 7.6 | 23.0 | HIGH | HIGH | HIGH | HIGH | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2007-11-05 | 100 | - | 11 | 7.7 | 20.0 | HIGH | low | low | low |
| 3 | 188131 | 2007-11-20 | 600 | - | 9 | 7.6 | 20.0 | HIGH | low | HIGH | low | |
| 3 | 188131 | 2007-12-03 | 4000 | - | 60 | 7.5 | 20.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 | 2007-12-18 | 770 | - | 8 | 7.7 | 22.0 | HIGH | low | HIGH | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2007-11-05 | 40 | - | 13 | 8.8 | 21.0 | HIGH | low | low | low |
| 4 | 188132 | 2007-11-20 | 70 | - | 9 | 8.2 | 21.0 | HIGH | low | low | low | |
| 4 | 188132 | 2007-12-03 | 160 | - | 33 | 8.8 | 23.0 | HIGH | low | low | low | |
| 4 | 188132 | 2007-12-18 | 62 | - | 19 | 8.7 | 22.0 | HIGH | low | low | low | |
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