| № | 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 |
|
2009-01-08 | 198600 | - | 5 | 7.1 | 21.0 | HIGH | HIGH | HIGH | HIGH |
| 1 | 182718 | 2009-01-22 | 16200 | - | 13 | 7.5 | 23.0 | HIGH | Med | HIGH | HIGH | |
| 1 | 182718 | 2009-02-05 | 32600 | - | 40 | 7.6 | 20.0 | HIGH | HIGH | HIGH | HIGH | |
| 1 | 182718 | 2009-02-19 | 308 | - | 122 | 7.6 | 23.0 | HIGH | low | Med | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2009-01-08 | 4400 | - | 96 | 7.7 | 20.0 | HIGH | Med | HIGH | HIGH |
| 2 | 188130 | 2009-01-22 | 23800 | - | 123 | 7.6 | 23.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 188130 | 2009-02-05 | 111 | - | 80 | 7.5 | 20.0 | HIGH | low | low | low | |
| 2 | 188130 | 2009-02-19 | 194 | - | 122 | 7.5 | 23.0 | HIGH | low | low | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2009-01-08 | 345 | - | 28 | 7.5 | 20.0 | HIGH | low | Med | low |
| 3 | 188131 | 2009-01-22 | 1000 | - | 13 | 7.5 | 23.0 | HIGH | low | HIGH | Med | |
| 3 | 188131 | 2009-02-05 | 770 | - | 8 | 7.5 | 21.0 | HIGH | low | HIGH | low | |
| 3 | 188131 | 2009-02-19 | 185 | - | 14 | 7.6 | 24.0 | HIGH | low | low | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2009-01-08 | 30 | - | 10 | 8.1 | 24.0 | HIGH | low | low | low |
| 4 | 188132 | 2009-01-22 | 29 | - | 14 | 9.0 | 26.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-02-05 | 196 | - | 81 | 7.5 | 24.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-02-19 | 400 | - | 122 | 7.6 | 24.0 | HIGH | low | HIGH | low | |
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