| № | 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) |
|
2013-05-09 | 1300 | - | - | 7.5 | - | HIGH | low | HIGH | Med |
| 1 | 90849 | 2013-06-10 | 1733 | - | - | 7.7 | - | HIGH | low | HIGH | Med | |
| 2 | 182718 [2-month plot]
Skoonspruit D/S from Orkney Sewage Works |
|
2013-05-08 | 2420 | - | - | 7.5 | - | HIGH | Med | HIGH | Med |
| 2 | 182718 | 2013-05-09 | 1081 | - | 3 | 7.9 | 16.0 | HIGH | low | HIGH | Med | |
| 2 | 182718 | 2013-05-09 | 1081 | - | 3 | 7.9 | 16.0 | HIGH | low | HIGH | Med | |
| 2 | 182718 | 2013-05-29 | 6700 | - | 7 | 8.0 | 17.0 | HIGH | Med | HIGH | HIGH | |
| 2 | 182718 | 2013-06-06 | 1300 | - | 4 | 7.6 | 13.0 | HIGH | low | HIGH | Med | |
| 2 | 182718 | 2013-06-06 | 473 | - | 4 | 7.6 | 13.0 | HIGH | low | HIGH | low | |
| 2 | 182718 | 2013-06-20 | 15030 | - | 3 | 7.7 | 9.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2013-05-08 | 133 | - | - | 7.4 | - | HIGH | low | low | low |
| 3 | 188130 | 2013-05-09 | 9804 | - | 266 | 7.8 | 16.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188130 | 2013-05-09 | 9804 | - | 266 | 7.8 | 16.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188130 | 2013-05-29 | 4140 | - | 57 | 7.5 | 17.0 | HIGH | Med | HIGH | HIGH | |
| 3 | 188130 | 2013-06-06 | 860 | - | 123 | 7.5 | 12.0 | HIGH | low | HIGH | low | |
| 3 | 188130 | 2013-06-06 | 231 | - | 123 | 7.5 | 12.0 | HIGH | low | Med | low | |
| 3 | 188130 | 2013-06-20 | 2420 | - | 38 | 7.6 | 9.5 | HIGH | Med | HIGH | Med | |
| 4 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2013-05-09 | 1300 | - | 9 | 7.7 | 14.0 | HIGH | low | HIGH | Med |
| 4 | 188131 | 2013-05-09 | 1300 | - | 9 | 7.7 | 14.0 | HIGH | low | HIGH | Med | |
| 4 | 188131 | 2013-05-29 | 1750 | - | 11 | 7.5 | 17.0 | HIGH | low | HIGH | Med | |
| 4 | 188131 | 2013-06-06 | 1414 | - | 6 | 7.6 | 11.0 | HIGH | low | HIGH | Med | |
| 4 | 188131 | 2013-06-20 | 2420 | - | 5 | 7.7 | 10.0 | HIGH | Med | HIGH | Med | |
| 5 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2013-05-09 | 11 | - | 20 | 9.3 | 17.0 | HIGH | low | low | low |
| 5 | 188132 | 2013-05-09 | 11 | - | 20 | 9.3 | 17.0 | HIGH | low | low | low | |
| 5 | 188132 | 2013-05-17 | 40 | - | - | - | - | HIGH | low | low | low | |
| 5 | 188132 | 2013-05-29 | 8 | - | 21 | 9.1 | 18.0 | Med | low | low | low | |
| 5 | 188132 | 2013-06-06 | 21 | - | 15 | 9.2 | 14.0 | HIGH | low | low | low | |
| 5 | 188132 | 2013-06-14 | 72 | - | - | - | - | HIGH | low | low | low | |
| 5 | 188132 | 2013-06-20 | 40 | - | 17 | 8.9 | 11.0 | HIGH | low | low | low | |
| 6 | 191050 [2-month plot]
Floorsdrift 15 - Hoopstad at R59 Road Bridge on Vetrivier |
|
2013-05-03 | 866 | - | - | 8.0 | - | HIGH | low | HIGH | low |
| 6 | 191050 | 2013-06-21 | 866 | - | - | 8.0 | - | HIGH | low | HIGH | low | |
| 7 | 192624 [2-month plot]
Buffelsfontein 443 IP - at Midvaal Intake |
|
2013-05-09 | 16 | - | 19 | 9.4 | 15.0 | HIGH | low | low | low |
| 7 | 192624 | 2013-05-09 | 16 | - | 19 | 9.4 | 15.0 | HIGH | low | low | low | |
| 7 | 192624 | 2013-05-29 | 9 | - | 20 | 9.2 | 16.0 | Med | low | low | low | |
| 7 | 192624 | 2013-06-06 | 16 | - | 15 | 9.3 | 12.0 | HIGH | low | low | low | |
| 7 | 192624 | 2013-06-20 | 28 | - | 18 | 8.9 | 11.0 | HIGH | low | low | low | |
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