| № | 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)  | 
 
 | 
2023-08-31 | 2420 | 2420 | - | 6.8 | - | HIGH | Med | HIGH | Med | 
| 2 | 90697 [2-month plot]
 (B8) Nigel R51 Road Bridge to Balfour  | 
 
 | 
2023-07-05 | 189 | - | - | - | - | HIGH | low | low | low | 
| 2 | 90697 | 2023-07-18 | 271 | - | - | - | - | HIGH | low | Med | low | |
| 2 | 90697 | 2023-08-02 | 358 | - | - | - | - | HIGH | low | Med | low | |
| 2 | 90697 | 2023-08-15 | 649 | - | - | - | - | HIGH | low | HIGH | low | |
| 2 | 90697 | 2023-08-29 | 1553 | - | - | - | - | HIGH | low | HIGH | Med | |
| 2 | 90697 | 2023-08-31 | 326 | 326 | - | 7.3 | - | HIGH | low | Med | low | |
| 3 | 90725 [2-month plot]
 Klip River at R41 Witpoortjie U/S Durban Deep Mine  | 
 
 | 
2023-07-05 | 182 | - | - | - | - | HIGH | low | low | low | 
| 3 | 90725 | 2023-07-18 | 26 | - | - | - | - | HIGH | low | low | low | |
| 3 | 90725 | 2023-08-02 | 43 | - | - | - | - | HIGH | low | low | low | |
| 3 | 90725 | 2023-08-15 | 17 | - | - | - | - | HIGH | low | low | low | |
| 3 | 90725 | 2023-08-22 | 61 | 71 | 15 | 9.5 | - | HIGH | low | low | low | |
| 3 | 90725 | 2023-08-29 | 74 | - | - | - | - | HIGH | low | low | low | |
| 4 | 90727 [2-month plot]
 At Golden Highway Olifantsvlei van Wyk on Kliprivier  | 
 
 | 
2023-07-05 | 980400 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | 
| 4 | 90727 | 2023-07-18 | 613100 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 4 | 90727 | 2023-08-02 | 1119900 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 4 | 90727 | 2023-08-15 | 617100 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 4 | 90727 | 2023-08-22 | 2420 | 2420 | 45 | 9.2 | - | HIGH | Med | HIGH | Med | |
| 4 | 90727 | 2023-08-29 | 435200 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 5 | 188262 [2-month plot]
 Mmabatho - at Road Bridge on Molopo River, D/S of Mafikeng  | 
 
 | 
2023-07-03 | 667750 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | 
| 5 | 188262 | 2023-07-17 | 307600 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 5 | 188262 | 2023-07-31 | 290900 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 5 | 188262 | 2023-08-14 | 579400 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 5 | 188262 | 2023-08-28 | 980400 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 6 | 189147 [2-month plot]
 Warden 150 M upstream of Dam Wall on Cornelisrivier  | 
 
 | 
2023-08-30 | 8 | 8 | 3 | 7.4 | - | Med | low | low | low | 
| 7 | 191688 [2-month plot]
 Mmabatho - D/S of Mmabatho WWTW, on Molopo Tributary.  | 
 
 | 
2023-07-03 | 1986300 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | 
| 7 | 191688 | 2023-07-17 | 3255000 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 7 | 191688 | 2023-07-31 | 2419600 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 7 | 191688 | 2023-08-14 | 2419600 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 7 | 191688 | 2023-08-28 | 1859600 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 8 | 191693 [2-month plot]
 - Soweto Eldoradopark - at Road Bridge on Klipspruit  | 
 
 | 
2023-07-05 | 714750 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | 
| 8 | 191693 | 2023-07-17 | 235900 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 8 | 191693 | 2023-08-02 | 517200 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 8 | 191693 | 2023-08-15 | 387300 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 8 | 191693 | 2023-08-29 | 111990 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 9 | 191696 [2-month plot]
 Sia 20 - Eldorado Park Goudkoppie - at Goudkoppie WWTW, near Power Park  | 
 
 | 
2023-07-13 | 240000 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | 
| 9 | 191696 | 2023-08-06 | 10000 | - | - | - | - | HIGH | Med | HIGH | HIGH | |
| 9 | 191696 | 2023-08-10 | 150000 | - | - | - | - | HIGH | HIGH | HIGH | HIGH | |
| 10 | 191876 [2-month plot]
 Roodepoort Bothasfontein 408 JR - at Florida Lake Outlet  | 
 
 | 
2023-07-13 | 450 | - | - | - | - | HIGH | low | HIGH | low | 
| 10 | 191876 | 2023-08-06 | 10 | - | - | - | - | HIGH | low | low | low | |
| 10 | 191876 | 2023-08-10 | 230 | - | - | - | - | HIGH | low | Med | low | |
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