| № | 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 |
|
2008-09-02 | 435 | - | 2 | 7.8 | 13.0 | HIGH | low | HIGH | low |
| 1 | 182718 | 2008-10-01 | 152 | - | 3 | 8.2 | 19.0 | HIGH | low | low | low | |
| 1 | 182718 | 2008-10-21 | 510 | - | 2 | 8.0 | 20.0 | HIGH | low | HIGH | low | |
| 1 | 182718 | 2008-10-29 | 1120 | - | 3 | 7.9 | 20.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2008-09-02 | 127 | - | 18 | 8.4 | 13.0 | HIGH | low | low | low |
| 2 | 188130 | 2008-10-01 | 13000 | - | 4 | 8.7 | 19.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 | 2008-10-21 | 1750 | - | 30 | 8.4 | 21.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2008-10-29 | 488 | - | 27 | 8.5 | 21.0 | HIGH | low | HIGH | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2008-09-02 | 2750 | - | 16 | 7.8 | 13.0 | HIGH | Med | HIGH | Med |
| 3 | 188131 | 2008-10-01 | 58 | - | 6 | 8.3 | 21.0 | HIGH | low | low | low | |
| 3 | 188131 | 2008-10-21 | 400 | - | 11 | 8.0 | 21.0 | HIGH | low | HIGH | low | |
| 3 | 188131 | 2008-10-29 | 1300 | - | 24 | 8.3 | 20.0 | HIGH | low | HIGH | Med | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2008-09-02 | 22 | - | 9 | 9.0 | 14.0 | HIGH | low | low | low |
| 4 | 188132 | 2008-10-01 | 9 | - | 7 | 9.4 | 20.0 | Med | low | low | low | |
| 4 | 188132 | 2008-10-21 | 16 | - | 6 | 8.5 | 21.0 | HIGH | low | low | low | |
| 4 | 188132 | 2008-10-29 | 54 | - | 8 | 8.4 | 22.0 | HIGH | low | low | low | |
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