| № | 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)  | 
 
 | 
2003-11-28 | 2500 | - | - | 7.3 | - | HIGH | Med | HIGH | Med | 
| 1 | 90616 | 2003-12-15 | 3400 | - | - | 6.9 | - | HIGH | Med | HIGH | Med | |
| 2 | 187058 [2-month plot]
 Dam at 42ND Hill Informal Settlement  | 
 
 | 
2003-11-26 | 220 | - | 57 | 7.8 | 19.5 | HIGH | low | Med | low | 
| 2 | 187058 | 2003-12-18 | 111 | - | 14 | 7.8 | 21.0 | HIGH | low | low | low | |
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