| № | 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 |
|
2009-07-07 | 11 | - | 75 | 7.6 | 16.0 | HIGH | low | low | low |
| 1 | 182718 | 2009-07-20 | 135 | - | 6 | 7.9 | 19.0 | HIGH | low | low | low | |
| 1 | 182718 | 2009-08-12 | 5300 | - | 5 | 8.0 | 14.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2009-07-07 | 38700 | - | 75 | 8.0 | 16.0 | HIGH | HIGH | HIGH | HIGH |
| 2 | 188130 | 2009-07-20 | 7200 | - | 9 | 8.0 | 18.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 | 2009-08-12 | 3600 | - | 34 | 7.9 | 14.0 | HIGH | Med | HIGH | Med | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2009-07-07 | 3 | - | 153 | 7.6 | 16.0 | Med | low | low | low |
| 3 | 188131 | 2009-07-20 | 201 | - | 2 | 7.6 | 19.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2009-08-12 | 19 | - | 4 | 7.7 | 14.0 | HIGH | low | low | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2009-07-07 | 45 | - | 75 | 8.8 | 16.0 | HIGH | low | low | low |
| 4 | 188132 | 2009-07-20 | 11 | - | 14 | 8.8 | 20.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-08-12 | 13 | - | 15 | 8.8 | 15.0 | HIGH | low | low | low | |
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