| № | 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 |
|
2009-05-11 | 27 | - | 26 | 8.1 | 18.0 | HIGH | low | low | low |
| 1 | 182718 | 2009-05-25 | 11 | - | 7 | 7.7 | 21.0 | HIGH | low | low | low | |
| 1 | 182718 | 2009-06-08 | 6 | - | 7 | 7.7 | 18.0 | Med | low | low | low | |
| 1 | 182718 | 2009-06-22 | 36500 | - | 6 | 7.7 | 15.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2009-05-11 | 18500 | - | 23 | 7.9 | 18.0 | HIGH | Med | HIGH | HIGH |
| 2 | 188130 | 2009-05-25 | 11100 | - | 8 | 7.8 | 21.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 | 2009-06-08 | 4900 | - | 7 | 7.7 | 18.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 | 2009-06-22 | 46100 | - | 23 | 8.3 | 15.0 | HIGH | HIGH | HIGH | HIGH | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2009-05-11 | 19400 | - | 5 | 7.6 | 18.0 | HIGH | Med | HIGH | HIGH |
| 3 | 188131 | 2009-05-25 | 9 | - | 49 | 7.5 | 20.0 | Med | low | low | low | |
| 3 | 188131 | 2009-06-08 | 300 | - | 4 | 7.3 | 19.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2009-06-22 | 400 | - | 31 | 7.7 | 15.0 | HIGH | low | HIGH | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2009-05-11 | 179 | - | 15 | 8.4 | 18.0 | HIGH | low | low | low |
| 4 | 188132 | 2009-05-25 | 3 | - | 17 | 8.8 | 21.0 | Med | low | low | low | |
| 4 | 188132 | 2009-06-08 | 22 | - | 15 | 9.0 | 18.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-06-22 | 11 | - | 16 | 8.9 | 15.0 | HIGH | low | low | low | |
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