| № | Site [ view Upper 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 | 90697 [2-month plot]
 (B8) Nigel R51 Road Bridge to Balfour  | 
 
 | 
2002-01-24 | - | 950 | - | 8.2 | - | HIGH | low | HIGH | low | 
| 2 | 90725 [2-month plot]
 Klip River at R41 Witpoortjie U/S Durban Deep Mine  | 
 
 | 
2002-02-01 | - | 2 | - | 3.3 | - | Med | low | low | low | 
| 2 | 90725 | 2002-02-26 | - | 8 | - | 3.6 | - | Med | low | low | low | |
| 2 | 90725 | 2002-02-27 | - | 8 | - | 3.6 | - | Med | low | low | low | |
| 3 | 90727 [2-month plot]
 At Golden Highway Olifantsvlei van Wyk on Kliprivier  | 
 
 | 
2002-02-01 | - | 2100 | - | 7.1 | - | HIGH | Med | HIGH | Med | 
| 3 | 90727 | 2002-02-26 | - | 850 | - | 6.0 | - | HIGH | low | HIGH | low | |
| 3 | 90727 | 2002-02-27 | - | 850 | - | 6.0 | - | HIGH | low | HIGH | low | |
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