| № | 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 |
|
2004-11-16 | 180 | - | 18 | 8.3 | 24.0 | HIGH | low | low | low |
| 1 | 182718 | 2004-12-13 | 240 | - | 17 | 8.4 | 23.0 | HIGH | low | Med | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2004-11-16 | 165 | - | 37 | 8.4 | 23.0 | HIGH | low | low | low |
| 2 | 188130 | 2004-12-13 | 172 | - | 68 | 8.1 | 23.0 | HIGH | low | low | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2004-11-16 | 470 | - | 6 | 7.8 | 23.0 | HIGH | low | HIGH | low |
| 3 | 188131 | 2004-12-13 | 261 | - | 10 | 7.8 | 21.0 | HIGH | low | Med | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2004-11-16 | 390 | - | - | 8.3 | 24.0 | HIGH | low | Med | low |
| 4 | 188132 | 2004-12-13 | 26 | - | 26 | 8.9 | 23.0 | HIGH | low | low | low | |
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