| № | 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 |
|
2011-07-05 | 7710 | - | 5 | 8.5 | 9.3 | HIGH | Med | HIGH | HIGH |
| 1 | 182718 | 2011-07-20 | 5380 | - | 5 | 8.6 | 8.6 | HIGH | Med | HIGH | HIGH | |
| 1 | 182718 | 2011-08-02 | 1203 | - | 7 | 8.2 | 10.0 | HIGH | low | HIGH | Med | |
| 1 | 182718 | 2011-08-17 | 461 | - | 5 | 8.4 | 11.0 | HIGH | low | HIGH | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2011-07-05 | 1203 | - | 6 | 8.5 | 9.3 | HIGH | low | HIGH | Med |
| 2 | 188130 | 2011-07-20 | 3360 | - | 6 | 8.6 | 8.6 | HIGH | Med | HIGH | Med | |
| 2 | 188130 | 2011-08-02 | 68670 | - | 6 | 8.4 | 10.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 188130 | 2011-08-17 | 2419 | - | 7 | 8.3 | 11.0 | HIGH | Med | HIGH | Med | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2011-07-05 | 37 | - | 3 | 8.4 | 9.3 | HIGH | low | low | low |
| 3 | 188131 | 2011-07-20 | 72 | - | 3 | 8.1 | 8.8 | HIGH | low | low | low | |
| 3 | 188131 | 2011-08-02 | 248 | - | 3 | 7.8 | 10.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2011-08-17 | 1986 | - | 3 | 8.0 | 12.0 | HIGH | low | HIGH | Med | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2011-07-05 | 35 | - | 25 | 9.7 | 9.6 | HIGH | low | low | low |
| 4 | 188132 | 2011-07-20 | 7 | - | 13 | 9.4 | 9.4 | Med | low | low | low | |
| 4 | 188132 | 2011-08-02 | 5 | - | 18 | 9.2 | 10.0 | Med | low | low | low | |
| 4 | 188132 | 2011-08-17 | 3 | - | 12 | 8.7 | 12.0 | Med | low | low | low | |
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