| № | 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 | 90849 [2-month plot]
Kroonstad - at R76 Road Bridge on Vals River (Old Barend Wessel) |
|
2012-11-12 | 980 | - | - | 8.9 | - | HIGH | low | HIGH | low |
| 1 | 90849 | 2012-12-10 | 649 | - | - | 9.0 | - | HIGH | low | HIGH | low | |
| 2 | 182718 [2-month plot]
Skoonspruit D/S from Orkney Sewage Works |
|
2012-11-05 | 1725 | - | 12 | 7.5 | 23.0 | HIGH | low | HIGH | Med |
| 2 | 182718 | 2012-11-11 | 2420 | - | - | 7.7 | - | HIGH | Med | HIGH | Med | |
| 2 | 182718 | 2012-11-22 | 1223 | - | 8 | 7.8 | 25.0 | HIGH | low | HIGH | Med | |
| 2 | 182718 | 2012-12-03 | 290900 | - | 143 | 7.1 | 21.0 | HIGH | HIGH | HIGH | HIGH | |
| 2 | 182718 | 2012-12-06 | 2420 | - | - | 7.6 | - | HIGH | Med | HIGH | Med | |
| 3 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2012-11-05 | 1789 | - | 94 | 7.4 | 22.0 | HIGH | low | HIGH | Med |
| 3 | 188130 | 2012-11-11 | 1553 | - | - | 7.3 | - | HIGH | low | HIGH | Med | |
| 3 | 188130 | 2012-11-22 | 959 | - | 7 | 7.8 | 24.0 | HIGH | low | HIGH | low | |
| 3 | 188130 | 2012-12-03 | 160700 | - | 143 | 7.1 | 21.0 | HIGH | HIGH | HIGH | HIGH | |
| 3 | 188130 | 2012-12-06 | 2420 | - | - | 7.1 | - | HIGH | Med | HIGH | Med | |
| 4 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2012-11-05 | 122 | - | 15 | 7.2 | 22.0 | HIGH | low | low | low |
| 4 | 188131 | 2012-11-23 | 2420 | - | 21 | 7.7 | 25.0 | HIGH | Med | HIGH | Med | |
| 4 | 188131 | 2012-12-03 | 1600 | - | 8 | 8.0 | 20.0 | HIGH | low | HIGH | Med | |
| 5 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2012-11-05 | 46 | - | 17 | 8.9 | 23.0 | HIGH | low | low | low |
| 5 | 188132 | 2012-11-11 | 34 | - | - | 8.8 | - | HIGH | low | low | low | |
| 5 | 188132 | 2012-11-22 | 26 | - | 11 | 9.3 | 25.0 | HIGH | low | low | low | |
| 5 | 188132 | 2012-12-03 | 31 | - | 14 | 8.1 | 21.0 | HIGH | low | low | low | |
| 5 | 188132 | 2012-12-06 | 66 | - | - | 8.5 | - | HIGH | low | low | low | |
| 6 | 191050 [2-month plot]
Floorsdrift 15 - Hoopstad at R59 Road Bridge on Vetrivier |
|
2012-11-13 | 2420 | - | - | 8.3 | - | HIGH | Med | HIGH | Med |
| 6 | 191050 | 2012-12-13 | 1046 | - | - | 7.8 | - | HIGH | low | HIGH | Med | |
| 7 | 192624 [2-month plot]
Buffelsfontein 443 IP - at Midvaal Intake |
|
2012-11-05 | 33 | - | 17 | 8.6 | 22.0 | HIGH | low | low | low |
| 7 | 192624 | 2012-11-22 | 19 | - | 10 | 9.3 | 25.0 | HIGH | low | low | low | |
| 7 | 192624 | 2012-12-03 | 20 | - | 14 | 7.8 | 20.0 | HIGH | low | low | low | |
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