| № | 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 |
|
2005-03-07 | 3100 | - | 23 | 7.9 | 25.0 | HIGH | Med | HIGH | Med |
| 1 | 182718 | 2005-03-23 | 172 | - | 28 | 7.5 | 23.0 | HIGH | low | low | low | |
| 1 | 182718 | 2005-04-04 | 13 | - | 90 | 8.0 | 22.0 | HIGH | low | low | low | |
| 1 | 182718 | 2005-04-19 | 8200 | - | 21 | 7.9 | 20.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2005-03-07 | 326 | - | 42 | 8.1 | 25.0 | HIGH | low | Med | low |
| 2 | 188130 | 2005-03-23 | 91 | - | 71 | 7.7 | 24.0 | HIGH | low | low | low | |
| 2 | 188130 | 2005-04-04 | 34 | - | 300 | 8.0 | 21.0 | HIGH | low | low | low | |
| 2 | 188130 | 2005-04-19 | 1200 | - | 86 | 8.1 | 22.0 | HIGH | low | HIGH | Med | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2005-03-07 | 172 | - | 6 | 7.7 | 25.0 | HIGH | low | low | low |
| 3 | 188131 | 2005-03-23 | 7 | - | 3 | 7.3 | 23.0 | Med | low | low | low | |
| 3 | 188131 | 2005-04-04 | 38 | - | 5 | 7.6 | 22.0 | HIGH | low | low | low | |
| 3 | 188131 | 2005-04-19 | 0 | - | 2 | 7.8 | 21.0 | low | low | low | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2005-03-07 | 34 | - | 10 | 8.1 | 25.0 | HIGH | low | low | low |
| 4 | 188132 | 2005-03-23 | 0 | - | 6 | 7.6 | 23.0 | low | low | low | low | |
| 4 | 188132 | 2005-04-04 | 59 | - | 13 | 8.1 | 22.0 | HIGH | low | low | low | |
| 4 | 188132 | 2005-04-19 | 100 | - | 18 | 8.2 | 20.0 | HIGH | low | low | low | |
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