| № | 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 |
|
2007-07-02 | 17320 | - | 6 | 7.3 | 12.0 | HIGH | Med | HIGH | HIGH |
| 1 | 182718 | 2007-07-16 | 980 | - | 2 | 7.4 | 16.0 | HIGH | low | HIGH | low | |
| 1 | 182718 | 2007-08-06 | 1000 | - | 2 | 7.5 | 13.0 | HIGH | low | HIGH | Med | |
| 1 | 182718 | 2007-08-21 | 500 | - | 3 | 7.5 | 13.0 | HIGH | low | HIGH | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2007-07-02 | 20920 | - | 16 | 8.2 | 13.0 | HIGH | HIGH | HIGH | HIGH |
| 2 | 188130 | 2007-07-16 | 50 | - | 14 | 8.0 | 16.0 | HIGH | low | low | low | |
| 2 | 188130 | 2007-08-06 | 285 | - | 10 | 7.9 | 14.0 | HIGH | low | Med | low | |
| 2 | 188130 | 2007-08-21 | 20 | - | 10 | 7.8 | 13.0 | HIGH | low | low | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2007-07-02 | 80 | - | 4 | 7.5 | 12.0 | HIGH | low | low | low |
| 3 | 188131 | 2007-07-16 | 90 | - | 2 | 7.9 | 14.0 | HIGH | low | low | low | |
| 3 | 188131 | 2007-08-06 | 0 | - | 3 | 7.9 | 13.0 | low | low | low | low | |
| 3 | 188131 | 2007-08-21 | 280 | - | 6 | 7.6 | 15.0 | HIGH | low | Med | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2007-07-02 | 3 | - | 6 | 8.9 | 11.0 | Med | low | low | low |
| 4 | 188132 | 2007-07-16 | 20 | - | 5 | 8.5 | 16.0 | HIGH | low | low | low | |
| 4 | 188132 | 2007-08-06 | 27 | - | 9 | 9.1 | 14.0 | HIGH | low | low | low | |
| 4 | 188132 | 2007-08-21 | 4 | - | 8 | 8.9 | 16.0 | Med | low | low | low | |
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