| № | 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 |
|
2010-07-06 | 7080 | - | 15 | 8.7 | 16.0 | HIGH | Med | HIGH | HIGH |
| 1 | 182718 | 2010-08-03 | 860 | - | 4 | 7.8 | 14.0 | HIGH | low | HIGH | low | |
| 1 | 182718 | 2010-08-16 | 122 | - | 15 | 8.1 | 13.0 | HIGH | low | low | low | |
| 1 | 182718 | 2010-08-30 | 15150 | - | 4 | 7.9 | 20.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2010-07-06 | 11000 | - | 16 | 8.6 | 16.0 | HIGH | Med | HIGH | HIGH |
| 2 | 188130 | 2010-08-03 | 2030 | - | 21 | 8.1 | 14.0 | HIGH | Med | HIGH | Med | |
| 2 | 188130 | 2010-08-16 | 365 | - | 3 | 7.8 | 14.0 | HIGH | low | Med | low | |
| 2 | 188130 | 2010-08-30 | 241960 | - | 6 | 8.0 | 20.0 | HIGH | HIGH | HIGH | HIGH | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2010-07-06 | 122 | - | 3 | 8.6 | 16.0 | HIGH | low | low | low |
| 3 | 188131 | 2010-08-03 | 4350 | - | 2 | 7.6 | 14.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 | 2010-08-16 | 206 | - | 4 | 7.6 | 13.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2010-08-30 | 12 | - | 13 | 9.5 | 19.0 | HIGH | low | low | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2010-07-06 | 6 | - | 12 | 9.4 | 16.0 | Med | low | low | low |
| 4 | 188132 | 2010-08-03 | 3 | - | 10 | 9.2 | 16.0 | Med | low | low | low | |
| 4 | 188132 | 2010-08-16 | 11 | - | 12 | 9.2 | 14.0 | HIGH | low | low | low | |
| 4 | 188132 | 2010-08-30 | 20 | - | 25 | 9.4 | 21.0 | HIGH | low | low | low | |
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