| № | 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 |
|
2008-01-02 | 200 | - | 23 | 8.8 | 24.0 | HIGH | low | Med | low |
| 1 | 182718 | 2008-01-15 | 6300 | - | 10 | 7.5 | 23.0 | HIGH | Med | HIGH | HIGH | |
| 1 | 182718 | 2008-01-29 | 32800 | - | 11 | 7.4 | 21.0 | HIGH | HIGH | HIGH | HIGH | |
| 1 | 182718 | 2008-02-27 | 1800 | - | 10 | 7.4 | 23.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2008-01-02 | 1700 | - | 10 | 8.1 | 24.0 | HIGH | low | HIGH | Med |
| 2 | 188130 | 2008-01-15 | 900 | - | 53 | 8.0 | 23.0 | HIGH | low | HIGH | low | |
| 2 | 188130 | 2008-01-29 | 9900 | - | 27 | 8.9 | 21.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 | 2008-02-27 | 3800 | - | 44 | 7.4 | 23.0 | HIGH | Med | HIGH | Med | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2008-01-02 | 500 | - | 10 | 7.8 | 24.0 | HIGH | low | HIGH | low |
| 3 | 188131 | 2008-01-15 | 100 | - | 7 | 7.6 | 24.0 | HIGH | low | low | low | |
| 3 | 188131 | 2008-01-29 | 400 | - | 7 | 7.6 | 24.0 | HIGH | low | HIGH | low | |
| 3 | 188131 | 2008-02-27 | 770 | - | 7 | 7.5 | 24.0 | HIGH | low | HIGH | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2008-01-02 | 69 | - | 23 | 8.8 | 24.0 | HIGH | low | low | low |
| 4 | 188132 | 2008-01-15 | 100 | - | 19 | 8.9 | 25.0 | HIGH | low | low | low | |
| 4 | 188132 | 2008-01-29 | 100 | - | 16 | 8.0 | 21.0 | HIGH | low | low | low | |
| 4 | 188132 | 2008-02-27 | 100 | - | 12 | 8.6 | 25.0 | HIGH | low | low | low | |
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