| Stations | Drgi | Njerere | Spnga Tabu | Grand Bale | Licha ya Drgi | Ingbokolo | Standards |
| Temperature (˚C) | 27.6 ± 0.6 | 27.6 ± 0.6 | 29.9 ± 1.4 | 29.8 ± 1.2 | 29.4 ± 1 | 28.9 ± 0.8 | <37 |
| pH | 7.4 ± 0.6 | 7.2 ± 0.7 | 7.6 ± 0.6 | 7.1 ± 0.3 | 7.7 ± 0.6 | 6.6 ± 0.6 | 6.5 - 8.5 |
| EC (µS/cm) | 81.8 ± 36.2 | 72.2 ± 27.2 | 77.8 ± 32.1 | 77 ± 19 | 191.2 ± 106.2 | 81.5 ± 26 | 20 - 1500 |
| Turbidity (NTU) | 13.9 ± 11.6 | 32.7 ± 20.2 | 11.3 ± 22.7 | 54.8 ± 41.1 | 26.9 ± 15.2 | 23.9 ± 11.8 | >5 |
| TDS (mg/L) | 40.9 ± 18.1 | 36.1 ± 13.6 | 38.9 ± 11.4 | 38.5 ± 9.5 | 95.6 ± 53.1 | 40.8 ± 13 | ≤400 |
| TSS (mg/L) | 3.8 ± 1.8 | 3.9 ± 1.8 | 9.8 ± 11.4 | 20.4 ± 13.3 | 50.7 ± 42.7 | 18.1 ± 4.6 | 20 |
| TH (mg/L) | 58.7 ± 5.9 | 58.7 ± 5.9 | 58.7 ± 5.9 | 34.5 ± 6.9 | 70.8 ± 29.3 | 47.4 ± 15.3 | 300 |
| CaH (mg/L) | 28.78 ± 7.6 | 28.8 ± 7.6 | 28.8 ± 7.6 | 15.6 ± 3 | 39.6 ± 29.1 | 26.6 ± 15.5 | 20 - 50 |
| MgH (mg/L) | 29.9 ± 1.7 | 29.9 ± 1.7 | 29.9 ± 1.7 | 18.8 ± 3.9 | 31.2 ± 0.1 | 20.8 ± 0.2 | 20 - 50 |
| Alkalinity (mg/L) | 25.2 ± 4.6 | 99.2 ± 38.2 | 99.2 ± 38.2 | 39.8 ± 9.3 | 53.8 ± 23.4 | 59.5 ± 37.3 | −250 |
| Sulphate (mg/L) | 19.1 ± 14.4 | 18.2 ± 12.2 | 19.2 ± 7.6 | 18.2 ± 6.3 | 20.5 ± 6.6 | 23.1 ± 14.4 | 500 |
| Chloride (mg/L) | 3.0 ± 1.7 | 3.6 ± 1 | 4.8 ± 1.8 | 5.1 ± 2.3 | 5.4 ± 3.7 | 6.4 ± 2.1 | 250 |
| Nitrite (mg/L) | 0.004 ± 0.001 | 0.006 ± 0.006 | 0.008 ± 0.007 | 0.02 ± 0.02 | 0.01 ± 0.01 | 0.008 ± 0.007 |
|
| Nitrate (mg/L) | 0.4 ± 0.2 | 0.2 ± 0.1 | 0.3 ± 0.3 | 0.04 ± 0.02 | 0.2 ± 0.2 | 0.2 ± 0.1 | <45 |
| Ammonium (mg/L) | 0.05 ± 0.01 | 0.5 ± 0.09 | 1.3 ± 0.3 | 0.05 ± 0.01 | 1.3 ± 0.3 | 0.5 ± 0.6 | 100 |
| Phosphore (mg/L) | 0.4 ± 0.04 | 0.2 ± 0.04 | 0.3 ± 0.1 | 0.4 ± 0.1 | 0.2 ± 0.02 | 0.6 ± 0.2 | 0.6 - 1.28 |
| Phosphate (mg/L) | 0.1 ± 0.02 | 0.2 ± 0.1 | 0.3 ± 0.1 | 0.2 ± 0.1 | 0.3 ± 0.1 | 0.3 ± 0.1 |
|
| DO (mg/L) | 11.3 ± 1.1 | 7.5 ± 2.4 | 7.1 ± 2.2 | 6.6 ± 2.3 | 8.3 ± 2.2 | 5.0 ± 1.4 | 6 |
| BOD5 (mg/L) | 1.9 ± 0.4 | 1.8 ± 0.4 | 1.8 ± 0.4 | 1.8 ± 0.3 | 1.8 ± 0.4 | 1.9 ± 0.4 | 0 - 50 |
| COD (mg/L) | 40.8 ± 11.5 | 36.8 ± 10.2 | 41.8 ± 16.6 | 42.3 ± 22.1 | 42.3 ± 14 | 50.1 ± 32.9 | 10 - 20 |
| Fe (mg/L) | 0.1 ± 0.1 | 0.6 ± 0.2 | 1.9 ± 3.4 | 5.2 ± 1 | 4.0 ± 1.5 | 5.9 ± 1.3 | 0.05 |
| F (mg/L) | 0.08 ± 0.05 | 0.1 ± 0.08 | 0.1 ± 0.08 | 0.09 ± 0.02 | 0.2 ± 0.2 | 0.1 ± 0.08 | 0.6 - 1.2 |
| K (mg/L) | 1.4 ± 0.3 | 1.6 ± 0.5 | 1.3 ± 0.3 | 3 ± 0.9 | 2.8 ± 1.2 | 1.9 ± 1.2 |
|
| Na (mg/L) | 4.6 ± 0.8 | 3.9 ± 1.6 | 4.9 ± 3.5 | 8.2 ± 1.4 | 14.8 ± 6.8 | 9.2 ± 3.9 |
|