| № | 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 |
|
2012-03-13 | 5172 | - | 8 | 7.6 | 25.0 | HIGH | Med | HIGH | HIGH |
| 1 | 182718 | 2012-03-26 | 855 | - | 19 | 7.8 | 26.0 | HIGH | low | HIGH | low | |
| 1 | 182718 | 2012-04-10 | 1986 | - | 4 | 7.6 | 19.0 | HIGH | low | HIGH | Med | |
| 1 | 182718 | 2012-04-23 | 281 | - | 3 | 7.7 | 17.0 | HIGH | low | Med | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2012-03-13 | 51720 | - | 18 | 7.7 | 25.0 | HIGH | HIGH | HIGH | HIGH |
| 2 | 188130 | 2012-03-26 | 624 | - | 46 | 7.8 | 26.0 | HIGH | low | HIGH | low | |
| 2 | 188130 | 2012-04-10 | 1986 | - | 76 | 7.8 | 19.0 | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2012-04-23 | 1733 | - | 28 | 7.7 | 18.0 | HIGH | low | HIGH | Med | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2012-03-13 | 488 | - | 11 | 7.7 | 25.0 | HIGH | low | HIGH | low |
| 3 | 188131 | 2012-03-26 | 199 | - | 14 | 8.2 | 26.0 | HIGH | low | low | low | |
| 3 | 188131 | 2012-04-10 | 461 | - | 17 | 7.9 | 17.0 | HIGH | low | HIGH | low | |
| 3 | 188131 | 2012-04-23 | 2820 | - | 28 | 7.7 | 17.0 | HIGH | Med | HIGH | Med | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2012-03-13 | 16 | - | 18 | 8.9 | 25.0 | HIGH | low | low | low |
| 4 | 188132 | 2012-03-26 | 11 | - | 16 | 9.1 | 25.0 | HIGH | low | low | low | |
| 4 | 188132 | 2012-04-10 | 11 | - | 19 | 9.4 | 18.0 | HIGH | low | low | low | |
| 4 | 188132 | 2012-04-23 | 14 | - | 17 | 9.4 | 18.0 | HIGH | low | low | low | |
| 5 | 192624 [2-month plot]
Buffelsfontein 443 IP - at Midvaal Intake |
|
2012-03-13 | 17 | - | 18 | 9.0 | 24.0 | HIGH | low | low | low |
| 5 | 192624 | 2012-03-26 | 6 | - | 16 | 9.1 | 26.0 | Med | low | low | low | |
| 5 | 192624 | 2012-04-10 | 55 | - | 20 | 9.4 | 18.0 | HIGH | low | low | low | |
| 5 | 192624 | 2012-04-23 | 30 | - | 17 | 9.3 | 17.0 | HIGH | low | low | low | |
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