| № | 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 |
|
2009-09-01 | 3200 | - | 3 | 7.8 | 22.0 | HIGH | Med | HIGH | Med |
| 1 | 182718 | 2009-09-14 | 214 | - | 12 | 7.5 | 22.0 | HIGH | low | Med | low | |
| 1 | 182718 | 2009-09-28 | 2600 | - | 9 | 7.9 | 20.0 | HIGH | Med | HIGH | Med | |
| 1 | 182718 | 2009-10-12 | 1733 | - | 38 | 8.2 | 20.0 | HIGH | low | HIGH | Med | |
| 1 | 182718 | 2009-10-26 | 687 | - | 5 | 7.8 | 21.0 | HIGH | low | HIGH | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2009-09-01 | 461 | - | 15 | 8.2 | 20.0 | HIGH | low | HIGH | low |
| 2 | 188130 | 2009-09-14 | 1414 | - | 8 | 7.8 | 21.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2009-09-28 | 1500 | - | 9 | 8.0 | 20.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2009-10-12 | 1100 | - | 38 | 7.9 | 20.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2009-10-26 | 2420 | - | 28 | 7.9 | 21.0 | HIGH | Med | HIGH | Med | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2009-09-01 | 37 | - | 3 | 7.6 | 21.0 | HIGH | low | low | low |
| 3 | 188131 | 2009-09-14 | 86 | - | 7 | 7.7 | 23.0 | HIGH | low | low | low | |
| 3 | 188131 | 2009-09-28 | 104 | - | 7 | 7.7 | 21.0 | HIGH | low | low | low | |
| 3 | 188131 | 2009-10-12 | 93 | - | 6 | 7.7 | 20.0 | HIGH | low | low | low | |
| 3 | 188131 | 2009-10-26 | 1000 | - | 4 | 7.5 | 21.0 | HIGH | low | HIGH | Med | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2009-09-01 | 3 | - | 12 | 9.3 | 21.0 | Med | low | low | low |
| 4 | 188132 | 2009-09-14 | 70 | - | 18 | 9.2 | 22.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-09-28 | 29 | - | 14 | 9.0 | 22.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-10-12 | 40 | - | 19 | 8.3 | 21.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-10-26 | 20 | - | 16 | 8.3 | 24.0 | HIGH | low | low | low | |
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