| № | 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 |
|
2007-01-02 | 517 | - | 14 | 8.0 | 24.0 | HIGH | low | HIGH | low |
| 1 | 182718 | 2007-01-17 | 9900 | - | 18 | 7.7 | 24.0 | HIGH | Med | HIGH | HIGH | |
| 1 | 182718 | 2007-01-30 | 200 | - | 15 | 7.9 | 25.0 | HIGH | low | Med | low | |
| 1 | 182718 | 2007-02-19 | 250 | - | 12 | 7.9 | 23.0 | HIGH | low | Med | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2007-01-02 | 1046 | - | 48 | 7.9 | 23.0 | HIGH | low | HIGH | Med |
| 2 | 188130 | 2007-01-17 | 400 | - | 28 | 8.2 | 24.0 | HIGH | low | HIGH | low | |
| 2 | 188130 | 2007-01-30 | 73000 | - | 127 | 7.8 | 25.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 188130 | 2007-02-19 | 0 | - | 78 | 8.0 | 24.0 | low | low | low | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2007-01-02 | 387 | - | 27 | 7.4 | 23.0 | HIGH | low | Med | low |
| 3 | 188131 | 2007-01-17 | 7800 | - | 39 | 7.4 | 23.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 | 2007-01-30 | 2000 | - | 12 | 7.7 | 24.0 | HIGH | Med | HIGH | Med | |
| 3 | 188131 | 2007-02-19 | 180 | - | 13 | 7.9 | 24.0 | HIGH | low | low | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2007-01-02 | 58 | - | 25 | 8.5 | 23.0 | HIGH | low | low | low |
| 4 | 188132 | 2007-01-17 | 100 | - | 13 | 8.5 | 25.0 | HIGH | low | low | low | |
| 4 | 188132 | 2007-01-30 | 10 | - | 10 | 8.3 | 26.0 | HIGH | low | low | low | |
| 4 | 188132 | 2007-02-19 | 0 | - | 8 | 8.1 | 24.0 | low | low | low | low | |
| 5 | 188488 [2-month plot]
Brent Park Rondavel Noord 1475 - at Moakeng Weir D/S Kroonstad on Valsrivier |
|
2007-01-11 | 21 | - | - | - | - | HIGH | low | low | low |
| 5 | 188488 | 2007-02-07 | 16 | - | - | - | - | HIGH | low | low | low | |
| 5 | 188488 | 2007-02-20 | 118 | - | - | - | - | HIGH | low | low | low | |
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