| № | Site [ view 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 | 90616 [2-month plot]
 Rietspruit at Kaalplaats (Rw RV2)  | 
 
 | 
2021-07-13 | 14100 | 14100 | - | 7.5 | - | HIGH | Med | HIGH | HIGH | 
| 1 | 90616 | 2021-08-11 | 160000 | 160000 | - | 7.3 | - | HIGH | HIGH | HIGH | HIGH | |
| 2 | 90697 [2-month plot]
 (B8) Nigel R51 Road Bridge to Balfour  | 
 
 | 
2021-07-15 | 3600 | 9300 | - | 8.1 | - | HIGH | Med | HIGH | Med | 
| 2 | 90697 | 2021-08-12 | 16 | 16 | - | 8.2 | - | HIGH | low | low | low | |
| 3 | 90725 [2-month plot]
 Klip River at R41 Witpoortjie U/S Durban Deep Mine  | 
 
 | 
2021-08-24 | 30 | 30 | 87 | 7.8 | - | HIGH | low | low | low | 
| 4 | 90727 [2-month plot]
 At Golden Highway Olifantsvlei van Wyk on Kliprivier  | 
 
 | 
2021-08-24 | 35000 | 76000 | 9 | 7.3 | - | HIGH | HIGH | HIGH | HIGH | 
| 5 | 189147 [2-month plot]
 Warden 150 M upstream of Dam Wall on Cornelisrivier  | 
 
 | 
2021-07-13 | 130 | 300 | 14 | 8.0 | - | HIGH | low | low | low | 
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