| № | 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 |
|
2015-05-04 | 179 | - | 4 | 8.0 | - | HIGH | low | low | low |
| 1 | 182718 | 2015-05-19 | 146 | - | 4 | 7.6 | - | HIGH | low | low | low | |
| 1 | 182718 | 2015-06-02 | 11120 | - | 3 | 7.8 | - | HIGH | Med | HIGH | HIGH | |
| 1 | 182718 | 2015-06-15 | 2420 | - | 2 | 7.8 | - | HIGH | Med | HIGH | Med | |
| 1 | 182718 | 2015-06-29 | 186 | - | 2 | 7.8 | - | HIGH | low | low | low | |
| 2 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2015-05-04 | 225 | - | 44 | 8.0 | - | HIGH | low | Med | low |
| 2 | 188130 | 2015-05-19 | 228 | - | 14 | - | 0.0 | HIGH | low | Med | low | |
| 2 | 188130 | 2015-06-02 | 9330 | - | 12 | 7.8 | - | HIGH | Med | HIGH | HIGH | |
| 2 | 188130 | 2015-06-15 | 1733 | - | 20 | 7.6 | - | HIGH | low | HIGH | Med | |
| 2 | 188130 | 2015-06-29 | 457 | - | 4 | 7.8 | - | HIGH | low | HIGH | low | |
| 3 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2015-05-04 | 198630 | - | 8 | 8.0 | - | HIGH | HIGH | HIGH | HIGH |
| 3 | 188131 | 2015-05-19 | 411 | - | 6 | 7.6 | - | HIGH | low | HIGH | low | |
| 3 | 188131 | 2015-06-02 | 19180 | - | 5 | 8.0 | - | HIGH | Med | HIGH | HIGH | |
| 3 | 188131 | 2015-06-15 | 2420 | - | 6 | 7.7 | - | HIGH | Med | HIGH | Med | |
| 3 | 188131 | 2015-06-29 | 291 | - | 8 | 7.8 | - | HIGH | low | Med | low | |
| 4 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2015-05-04 | 6 | - | 9 | 8.2 | - | Med | low | low | low |
| 4 | 188132 | 2015-05-19 | 12 | - | 10 | 8.2 | - | HIGH | low | low | low | |
| 4 | 188132 | 2015-06-02 | 22 | - | 9 | 8.6 | - | HIGH | low | low | low | |
| 4 | 188132 | 2015-06-15 | 4 | - | 9 | 8.3 | - | Med | low | low | low | |
| 4 | 188132 | 2015-06-29 | 14 | - | 11 | 8.8 | - | HIGH | low | low | low | |
| 5 | 192624 [2-month plot]
Buffelsfontein 443 IP - at Midvaal Intake |
|
2015-05-04 | 9 | - | 9 | 8.2 | - | Med | low | low | low |
| 5 | 192624 | 2015-05-19 | 18 | - | 10 | 8.2 | - | HIGH | low | low | low | |
| 5 | 192624 | 2015-06-02 | 21 | - | 9 | 8.6 | - | HIGH | low | low | low | |
| 5 | 192624 | 2015-06-15 | 9 | - | 9 | 8.4 | - | Med | low | low | low | |
| 5 | 192624 | 2015-06-29 | 2 | - | 10 | 8.8 | - | Med | low | low | low | |
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