| № | 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) |
|
2015-01-16 | 2420 | - | - | 7.3 | - | HIGH | Med | HIGH | Med |
| 1 | 90849 | 2015-02-04 | 1986 | - | - | 7.3 | - | HIGH | low | HIGH | Med | |
| 2 | 182718 [2-month plot]
Skoonspruit D/S from Orkney Sewage Works |
|
2015-01-08 | 461 | - | - | 7.5 | - | HIGH | low | HIGH | low |
| 2 | 182718 | 2015-01-14 | 368 | - | 12 | 7.8 | - | HIGH | low | Med | low | |
| 2 | 182718 | 2015-01-26 | 1153 | - | 6 | 7.7 | - | HIGH | low | HIGH | Med | |
| 2 | 182718 | 2015-02-09 | 21800 | - | 7 | 7.6 | - | HIGH | HIGH | HIGH | HIGH | |
| 2 | 182718 | 2015-02-16 | 2420 | - | - | 7.6 | - | HIGH | Med | HIGH | Med | |
| 2 | 182718 | 2015-02-24 | 172300 | - | 26 | 7.9 | - | HIGH | HIGH | HIGH | HIGH | |
| 3 | 188130 [2-month plot]
Goedgenoeg 433 IP at Orkney Road Bridge on Jagspruit on R502 |
|
2015-01-08 | 1986 | - | - | 7.6 | - | HIGH | low | HIGH | Med |
| 3 | 188130 | 2015-01-14 | 5172 | - | 56 | 7.9 | - | HIGH | Med | HIGH | HIGH | |
| 3 | 188130 | 2015-01-26 | 2613 | - | 65 | 8.4 | - | HIGH | Med | HIGH | Med | |
| 3 | 188130 | 2015-02-09 | 6570 | - | 12 | 7.9 | - | HIGH | Med | HIGH | HIGH | |
| 3 | 188130 | 2015-02-16 | 2420 | - | - | 7.9 | - | HIGH | Med | HIGH | Med | |
| 3 | 188130 | 2015-02-24 | 108100 | - | 26 | 7.8 | - | HIGH | HIGH | HIGH | HIGH | |
| 4 | 188131 [2-month plot]
Koekemoerspruit at Buffelsfontein Bridge |
|
2015-01-14 | 66300 | - | 12 | 7.7 | - | HIGH | HIGH | HIGH | HIGH |
| 4 | 188131 | 2015-01-26 | 24200 | - | 13 | 7.7 | - | HIGH | HIGH | HIGH | HIGH | |
| 4 | 188131 | 2015-02-09 | 27500 | - | 14 | 7.8 | - | HIGH | HIGH | HIGH | HIGH | |
| 4 | 188131 | 2015-02-24 | 14400 | - | 13 | 7.8 | - | HIGH | Med | HIGH | HIGH | |
| 5 | 188132 [2-month plot]
Orkney - at R30 Bothaville Orkney Bridge on Vaalrivier |
|
2015-01-09 | 27 | - | - | 8.8 | - | HIGH | low | low | low |
| 5 | 188132 | 2015-01-14 | 11 | - | 26 | 9.2 | - | HIGH | low | low | low | |
| 5 | 188132 | 2015-01-26 | 10 | - | 22 | 9.0 | - | HIGH | low | low | low | |
| 5 | 188132 | 2015-02-09 | 7 | - | 15 | 9.0 | - | Med | low | low | low | |
| 5 | 188132 | 2015-02-10 | 20 | - | - | 9.2 | - | HIGH | low | low | low | |
| 5 | 188132 | 2015-02-24 | 58 | - | 28 | 8.8 | - | HIGH | low | low | low | |
| 6 | 191050 [2-month plot]
Floorsdrift 15 - Hoopstad at R59 Road Bridge on Vetrivier |
|
2015-01-13 | 488 | - | - | 8.3 | - | HIGH | low | HIGH | low |
| 6 | 191050 | 2015-02-25 | 461 | - | - | 8.4 | - | HIGH | low | HIGH | low | |
| 7 | 192624 [2-month plot]
Buffelsfontein 443 IP - at Midvaal Intake |
|
2015-01-14 | 816 | - | 26 | 9.2 | - | HIGH | low | HIGH | low |
| 7 | 192624 | 2015-01-26 | 11 | - | 22 | 9.1 | - | HIGH | low | low | low | |
| 7 | 192624 | 2015-02-09 | 6 | - | 14 | 8.9 | - | Med | low | low | low | |
| 7 | 192624 | 2015-02-24 | 54 | - | 28 | 8.8 | - | HIGH | low | low | low | |
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