| № | 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 |
|
2006-07-04 | 950 | - | 4 | 8.6 | 15.0 | HIGH | low | HIGH | low |
| 1 | 182718 | 2006-07-18 | 4300 | - | 8 | 8.3 | 12.0 | HIGH | Med | HIGH | HIGH | |
| 1 | 182718 | 2006-08-07 | 1300 | - | 6 | 8.1 | 13.0 | HIGH | low | HIGH | Med | |
| 1 | 182718 | 2006-08-23 | 7100 | - | 6 | 8.1 | 15.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2006-07-04 | 613 | - | 8 | 8.6 | 15.0 | HIGH | low | HIGH | low |
| 2 | 188130 | 2006-07-18 | 140 | - | 8 | 8.7 | 12.0 | HIGH | low | low | low | |
| 2 | 188130 | 2006-08-07 | 10200 | - | 13 | 8.4 | 10.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 | 2006-08-23 | 1140 | - | 19 | 8.8 | 14.0 | HIGH | low | HIGH | Med | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2006-07-04 | 2260 | - | 2 | 7.9 | 15.0 | HIGH | Med | HIGH | Med |
| 3 | 188131 | 2006-07-18 | 3800 | - | 4 | 7.9 | 12.0 | HIGH | Med | HIGH | Med | |
| 3 | 188131 | 2006-08-07 | 4400 | - | 3 | 7.7 | 10.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 | 2006-08-23 | 2840 | - | 7 | 7.9 | 14.0 | HIGH | Med | HIGH | Med | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2006-07-04 | 91 | - | 12 | 8.8 | 15.0 | HIGH | low | low | low |
| 4 | 188132 | 2006-07-18 | 15 | - | 25 | 9.5 | 13.0 | HIGH | low | low | low | |
| 4 | 188132 | 2006-08-07 | 1000 | - | 15 | 8.1 | 10.0 | HIGH | low | HIGH | Med | |
| 4 | 188132 | 2006-08-23 | 35 | - | 24 | 9.2 | 15.0 | HIGH | low | low | low | |
| 5 | 188488 [2-month plot]
Brent Park Rondavel Noord 1475 - at Moakeng Weir D/S Kroonstad on Valsrivier |
|
2006-08-01 | 1 | - | - | - | - | Med | low | low | low |
| 5 | 188488 | 2006-08-10 | 0 | - | - | - | - | low | low | low | low | |
| 5 | 188488 | 2006-08-28 | 19 | - | - | - | - | HIGH | low | low | low | |
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