| Study | KIGATA | KACURO | KIHANGA | KITIBYA | KANJOBE | |||||
| Temp /˚C | TDS /mg∙L−1 | Temp /˚C | TDS /mg∙L−1 | Temp /˚C | TDS /mg∙L−1 | Temp /˚C | TDS /mg∙L−1 | Temp /˚C | TDS /mg∙L−1 | |
| March | 20.5 | 135.9 | 19.9 | 87.1 | 19.8 | 71.8 | 21.0 | 43.8 | 19.0 | 50.0 |
| April | 22.0 | 132.1 | 21.7 | 72.1 | 21.9 | 68.5 | 21.7 | 44.4 | 21.2 | 58.8 |
| May | 22.4 | 141.2 | 21.6 | 72.9 | 21.9 | 72.7 | 21.8 | 46.3 | 20.4 | 53.8 |
| June | 20.3 | 145.6 | 22.3 | 71.7 | 21.0 | 72.8 | 22.8 | 44.3 | 19.8 | 52.5 |
| July | 19.7 | 146.2 | 20.5 | 71.2 | 20.0 | 73.9 | 21.2 | 43.5 | 20.0 | 54.2 |
| August | 21.6 | 146.8 | 20.9 | 70.5 | 20.8 | 71.3 | 22.5 | 44.0 | 21.4 | 51.5 |