| № | 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 |
|
2007-03-06 | 4200 | - | 9 | 7.7 | 23.0 | HIGH | Med | HIGH | HIGH |
| 1 | 182718 | 2007-03-20 | 600 | - | 5 | 7.5 | 23.0 | HIGH | low | HIGH | low | |
| 1 | 182718 | 2007-04-12 | 940 | - | 2 | 7.5 | 24.0 | HIGH | low | HIGH | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2007-03-06 | 54800 | - | 410 | 7.6 | 23.0 | HIGH | HIGH | HIGH | HIGH |
| 2 | 188130 | 2007-03-20 | 500 | - | 34 | 8.0 | 22.0 | HIGH | low | HIGH | low | |
| 2 | 188130 | 2007-04-12 | 100 | - | 8 | 7.9 | 23.0 | HIGH | low | low | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2007-03-06 | 100 | - | 7 | 7.7 | 23.0 | HIGH | low | low | low |
| 3 | 188131 | 2007-03-20 | 950 | - | 3 | 7.8 | 22.0 | HIGH | low | HIGH | low | |
| 3 | 188131 | 2007-04-12 | 200 | - | 2 | 7.7 | 24.0 | HIGH | low | Med | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2007-03-06 | 50 | - | 9 | 8.1 | 24.0 | HIGH | low | low | low |
| 4 | 188132 | 2007-03-20 | 0 | - | 10 | 8.1 | 23.0 | low | low | low | low | |
| 4 | 188132 | 2007-04-12 | 20 | - | 9 | 8.2 | 23.0 | HIGH | low | low | low | |
| 5 | 188488 [2-month plot]
Brent Park Rondavel Noord 1475 - at Moakeng Weir D/S Kroonstad on Valsrivier |
|
2007-03-14 | 29 | - | - | - | - | HIGH | low | low | low |
| 5 | 188488 | 2007-03-30 | 201 | - | - | - | - | HIGH | low | Med | low | |
| 5 | 188488 | 2007-04-11 | 201 | - | - | - | - | HIGH | low | Med | low | |
| 5 | 188488 | 2007-04-17 | 109 | - | - | - | - | HIGH | low | low | low | |
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