| № | 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)  | 
 
 | 
2021-01-21 | 3100 | 11400 | - | 7.4 | - | HIGH | Med | HIGH | Med | 
| 1 | 90616 | 2021-02-16 | 4000 | 14800 | - | 7.7 | - | HIGH | Med | HIGH | HIGH | |
| 2 | 90697 [2-month plot]
 (B8) Nigel R51 Road Bridge to Balfour  | 
 
 | 
2021-02-25 | 2400 | 3500 | - | 7.6 | - | HIGH | Med | HIGH | Med | 
| 3 | 90725 [2-month plot]
 Klip River at R41 Witpoortjie U/S Durban Deep Mine  | 
 
 | 
2021-02-23 | 450 | 3100 | 5 | 7.3 | - | HIGH | low | HIGH | low | 
| 4 | 90727 [2-month plot]
 At Golden Highway Olifantsvlei van Wyk on Kliprivier  | 
 
 | 
2021-02-23 | 55000 | 150000 | 5 | 7.2 | - | HIGH | HIGH | HIGH | HIGH | 
| 5 | 189147 [2-month plot]
 Warden 150 M upstream of Dam Wall on Cornelisrivier  | 
 
 | 
2021-01-19 | 280 | 780 | 33 | 7.7 | - | HIGH | low | Med | low | 
| 5 | 189147 | 2021-02-23 | 8 | 8 | 47 | 7.9 | - | Med | low | low | low | |
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