| № | 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 |
|
2009-03-03 | 9 | - | 31 | 7.9 | 23.0 | Med | low | low | low |
| 1 | 182718 | 2009-03-16 | 109 | - | 51 | 8.1 | 20.0 | HIGH | low | low | low | |
| 1 | 182718 | 2009-04-06 | 1046 | - | 9 | 7.8 | 22.0 | HIGH | low | HIGH | Med | |
| 1 | 182718 | 2009-04-14 | 308 | - | 4 | 7.6 | 21.0 | HIGH | low | Med | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2009-03-03 | 9100 | - | 31 | 7.9 | 23.0 | HIGH | Med | HIGH | HIGH |
| 2 | 188130 | 2009-03-16 | 102 | - | 51 | 8.1 | 22.0 | HIGH | low | low | low | |
| 2 | 188130 | 2009-04-06 | 1300 | - | 21 | 8.7 | 21.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2009-04-14 | 196 | - | 4 | 7.5 | 21.0 | HIGH | low | low | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2009-03-03 | 308 | - | 3 | 7.4 | 24.0 | HIGH | low | Med | low |
| 3 | 188131 | 2009-03-16 | 365 | - | 3 | 7.4 | 20.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2009-04-06 | 461 | - | 3 | 7.5 | 21.0 | HIGH | low | HIGH | low | |
| 3 | 188131 | 2009-04-14 | 700 | - | 4 | 7.6 | 21.0 | HIGH | low | HIGH | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2009-03-03 | 138 | - | 75 | 7.6 | 22.0 | HIGH | low | low | low |
| 4 | 188132 | 2009-03-16 | 96 | - | 51 | 8.1 | 22.0 | HIGH | low | low | low | |
| 4 | 188132 | 2009-04-06 | 488 | - | 21 | 9.0 | 21.0 | HIGH | low | HIGH | low | |
| 4 | 188132 | 2009-04-14 | 26 | - | 14 | 8.9 | 22.0 | HIGH | low | low | low | |
 |
 |