| № | 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 |
|
2006-05-10 | 2800 | - | 8 | 8.8 | 16.0 | HIGH | Med | HIGH | Med |
| 1 | 182718 | 2006-05-25 | 400 | - | 13 | 8.3 | 14.0 | HIGH | low | HIGH | low | |
| 1 | 182718 | 2006-06-05 | 6900 | - | 13 | 8.8 | 14.0 | HIGH | Med | HIGH | HIGH | |
| 1 | 182718 | 2006-06-22 | 6100 | - | 7 | 8.7 | 14.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2006-05-10 | 4800 | - | 19 | 8.1 | 16.0 | HIGH | Med | HIGH | HIGH |
| 2 | 188130 | 2006-05-25 | 54800 | - | 10 | 8.4 | 14.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 188130 | 2006-06-05 | 99 | - | 10 | 9.4 | 14.0 | HIGH | low | low | low | |
| 2 | 188130 | 2006-06-22 | 400 | - | 11 | 8.3 | 17.0 | HIGH | low | HIGH | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2006-05-10 | 4800 | - | 9 | 7.9 | 16.0 | HIGH | Med | HIGH | HIGH |
| 3 | 188131 | 2006-05-25 | 4960 | - | 10 | 7.8 | 14.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 | 2006-06-05 | 17900 | - | 5 | 7.8 | 14.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 | 2006-06-22 | 2600 | - | 4 | 8.3 | 14.0 | HIGH | Med | HIGH | Med | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2006-05-10 | 8 | - | 36 | 8.8 | 16.0 | Med | low | low | low |
| 4 | 188132 | 2006-05-25 | 60 | - | 39 | 8.4 | 15.0 | HIGH | low | low | low | |
| 4 | 188132 | 2006-06-05 | 12 | - | 30 | 9.1 | 14.0 | HIGH | low | low | low | |
| 4 | 188132 | 2006-06-22 | 200 | - | 13 | 9.1 | 15.0 | HIGH | low | Med | low | |
| 5 | 188488 [2-month plot]
Brent Park Rondavel Noord 1475 - at Moakeng Weir D/S Kroonstad on Valsrivier |
|
2006-05-12 | 74 | - | - | - | - | HIGH | low | low | low |
| 5 | 188488 | 2006-06-30 | 201 | - | - | - | - | HIGH | low | Med | low | |
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