| № | 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 |
|
2008-05-12 | 600 | - | 4 | 7.5 | 16.0 | HIGH | low | HIGH | low |
| 1 | 182718 | 2008-05-26 | 1553 | - | 44 | 7.5 | 15.0 | HIGH | low | HIGH | Med | |
| 1 | 182718 | 2008-06-09 | 308 | - | 2 | 7.6 | 16.0 | HIGH | low | Med | low | |
| 1 | 182718 | 2008-06-23 | 4350 | - | 1 | 7.6 | 20.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2008-05-12 | 5500 | - | 19 | 8.9 | 18.0 | HIGH | Med | HIGH | HIGH |
| 2 | 188130 | 2008-05-26 | 43500 | - | 108 | 7.9 | 19.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 188130 | 2008-06-09 | 91 | - | 31 | 7.8 | 14.0 | HIGH | low | low | low | |
| 2 | 188130 | 2008-06-23 | 60 | - | 16 | 8.1 | 18.0 | HIGH | low | low | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2008-05-12 | 249 | - | 15 | 7.8 | 18.0 | HIGH | low | Med | low |
| 3 | 188131 | 2008-05-26 | 1733 | - | 12 | 7.7 | 14.0 | HIGH | low | HIGH | Med | |
| 3 | 188131 | 2008-06-09 | 88 | - | 5 | 7.8 | 14.0 | HIGH | low | low | low | |
| 3 | 188131 | 2008-06-23 | 200 | - | 6 | 7.7 | 18.0 | HIGH | low | Med | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2008-05-12 | 11 | - | 12 | 9.1 | 17.0 | HIGH | low | low | low |
| 4 | 188132 | 2008-05-26 | 36 | - | 13 | 8.8 | 15.0 | HIGH | low | low | low | |
| 4 | 188132 | 2008-06-09 | 12 | - | 13 | 9.2 | 13.0 | HIGH | low | low | low | |
| 4 | 188132 | 2008-06-23 | 20 | - | 9 | 8.7 | 18.0 | HIGH | low | low | low | |
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