| № | 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 |
|
2010-11-08 | 1690 | - | 39 | 8.0 | 22.0 | HIGH | low | HIGH | Med |
| 1 | 182718 | 2010-11-22 | 291 | - | 8 | 7.9 | 24.0 | HIGH | low | Med | low | |
| 1 | 182718 | 2010-12-07 | 15 | - | 15 | 7.9 | 23.0 | HIGH | low | low | low | |
| 1 | 182718 | 2010-12-20 | 9700 | - | 21 | 7.7 | 20.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2010-11-08 | 520 | - | 42 | 8.0 | 24.0 | HIGH | low | HIGH | low |
| 2 | 188130 | 2010-11-22 | 1300 | - | 26 | 7.8 | 24.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2010-12-07 | 10140 | - | 23 | 9.0 | 23.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 | 2010-12-07 | - | 1700 | 23 | 9.0 | 23.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2010-12-20 | 137600 | - | 50 | 7.8 | 21.0 | HIGH | HIGH | HIGH | HIGH | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2010-11-08 | 300 | - | 25 | 8.6 | 23.0 | HIGH | low | Med | low |
| 3 | 188131 | 2010-11-22 | 200 | - | 27 | 9.1 | 25.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2010-12-07 | 41060 | - | 11 | 8.0 | 23.0 | HIGH | HIGH | HIGH | HIGH | |
| 3 | 188131 | 2010-12-20 | 677 | - | 282 | 7.7 | 21.0 | HIGH | low | HIGH | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2010-11-08 | 520 | - | 20 | 9.2 | 24.0 | HIGH | low | HIGH | low |
| 4 | 188132 | 2010-11-22 | 410 | - | 26 | 8.9 | 25.0 | HIGH | low | HIGH | low | |
| 4 | 188132 | 2010-12-07 | 20 | - | 20 | 9.1 | 24.0 | HIGH | low | low | low | |
| 4 | 188132 | 2010-12-20 | 1250 | - | 202 | 7.7 | 22.0 | HIGH | low | HIGH | Med | |
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