| № | 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 |
|
2011-11-07 | 31 | - | 5 | 8.1 | 23.0 | HIGH | low | low | low |
| 1 | 182718 | 2011-11-24 | 1710 | - | 97 | 7.8 | 25.0 | HIGH | low | HIGH | Med | |
| 1 | 182718 | 2011-12-20 | 2755 | - | 34 | 9.0 | 24.0 | HIGH | Med | HIGH | Med | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2011-11-07 | 137400 | - | 22 | 8.7 | 22.0 | HIGH | HIGH | HIGH | HIGH |
| 2 | 188130 | 2011-11-24 | 1733 | - | 97 | 7.9 | 24.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2011-12-12 | 10340 | - | 18 | 7.9 | 25.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2011-11-07 | 90700 | - | 10 | 7.9 | 22.0 | HIGH | HIGH | HIGH | HIGH |
| 3 | 188131 | 2011-11-24 | 25 | - | 37 | 7.7 | 25.0 | HIGH | low | low | low | |
| 3 | 188131 | 2011-11-24 | 225 | - | 37 | 7.7 | 25.0 | HIGH | low | Med | low | |
| 3 | 188131 | 2011-12-12 | 17 | - | 23 | 9.1 | 25.0 | HIGH | low | low | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2011-11-07 | 20 | - | 16 | 9.2 | 22.0 | HIGH | low | low | low |
| 4 | 188132 | 2011-11-24 | 25 | - | 18 | 8.9 | 25.0 | HIGH | low | low | low | |
| 4 | 188132 | 2011-12-12 | 20640 | - | 50 | 8.0 | 25.0 | HIGH | HIGH | HIGH | HIGH | |
| 5 | 192624 [2-month plot]
Buffelsfontein 443 IP - at Midvaal Intake |
|
2011-12-12 | 31 | - | 19 | 9.3 | 24.0 | HIGH | low | low | low |
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