| № | 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 |
|
2005-05-07 | 1120 | - | 12 | 7.5 | 18.0 | HIGH | low | HIGH | Med |
| 1 | 182718 | 2005-05-24 | 500 | - | 7 | 8.2 | 17.0 | HIGH | low | HIGH | low | |
| 1 | 182718 | 2005-06-13 | 2200 | - | 5 | 7.9 | 15.0 | HIGH | Med | HIGH | Med | |
| 1 | 182718 | 2005-06-28 | 700 | - | 2 | 8.1 | 14.0 | HIGH | low | HIGH | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2005-05-07 | 184 | - | 24 | 8.2 | 19.0 | HIGH | low | low | low |
| 2 | 188130 | 2005-05-24 | 200 | - | 18 | 8.4 | 17.0 | HIGH | low | Med | low | |
| 2 | 188130 | 2005-06-13 | 0 | - | 16 | 8.1 | 15.0 | low | low | low | low | |
| 2 | 188130 | 2005-06-28 | 62 | - | 15 | 8.4 | 15.0 | HIGH | low | low | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2005-05-07 | 689 | - | 4 | 7.7 | 18.0 | HIGH | low | HIGH | low |
| 3 | 188131 | 2005-05-24 | 600 | - | 2 | 7.6 | 17.0 | HIGH | low | HIGH | low | |
| 3 | 188131 | 2005-06-13 | 37 | - | 1 | 7.8 | 15.0 | HIGH | low | low | low | |
| 3 | 188131 | 2005-06-28 | 5400 | - | 2 | 7.6 | 14.0 | HIGH | Med | HIGH | HIGH | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2005-05-07 | 276 | - | 8 | 8.4 | 18.0 | HIGH | low | Med | low |
| 4 | 188132 | 2005-05-24 | 5 | - | 5 | 8.9 | 17.0 | Med | low | low | low | |
| 4 | 188132 | 2005-06-13 | 14 | - | 8 | 8.9 | 15.0 | HIGH | low | low | low | |
| 4 | 188132 | 2005-06-28 | 30 | - | 7 | 8.3 | 14.0 | HIGH | low | low | low | |
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