| Reservoirs | Ziga reservoir | Bagré reservoir | Gouinré reservoir | |||||||||||||||
| Samples position | a | b | c | D | e | f | a | b | c | d | e | f | A | b | c | d | e | |
| WHO standards [11] | ||||||||||||||||||
| T ˚C |
| 32.30 | 31.80 | 31.90 | 32.30 | 32.50 | 32.30 | 29.40 | 29.10 | 28.90 | 29.50 | 29.80 | 29.50 | 27.30 | 25.70 | 25.20 | 26.00 | 26.10 |
| pH |
| 7.64 | 7.73 | 7.79 | 7.75 | 7.71 | 7.67 | 7.36 | 7.75 | 7.58 | 7.57 | 7.81 | 7.58 | 7.53 | 7.65 | 7.62 | 7.86 | 7.93 |
| EC (at 20˚C) |
| 82.00 | 82.30 | 82.10 | 82.30 | 82.50 | 82.20 | 72.30 | 72.20 | 75.10 | 76.70 | 77.40 | 78.50 | 82.20 | 81.70 | 82.10 | 81.00 | 80.80 |
| Turbidity (NTU) | 5.00 | 48.05 | 49.01 | 64.55 | 87.71 | 115.40 | 99.78 | 105.10 | 99.25 | 119.30 | 140.10 | 163.10 | 182.20 | 14.33 | 16.26 | 20.79 | 20.79 | 12.54 |
| TDS (mg/L) | 1000.00 | 82.00 | 82.00 | 82.00 | 82.00 | 83.00 | 82.00 | 72.00 | 72.00 | 75.00 | 77.00 | 77.00 | 79.00 | 82.00 | 82.00 | 82.00 | 81.00 | 81.00 |
| MES (mg/L) | 25 | 0.00 | 5.60 | 5.60 | 11.20 | 32.00 | 73.60 | 15.00 | 20.80 | 26.40 | 26.40 | 22.60 | 26.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| TA (˚F) |
| 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| TAC (˚F) |
| 10.30 | 9.78 | 8.94 | 4.71 | 4.41 | 3.61 | 4.41 | 2.65 | 3.24 | 3.91 | 3.60 | 5.51 | 5.19 | 6.24 | 6.23 | 8.70 | 10.40 |
| TH (˚F) | 50.00 | 12.26 | 10.43 | 8.81 | 4.52 | 3.67 | 3.49 | 4.02 | 2.60 | 2.34 | 3.55 | 3.39 | 4.66 | 4.53 | 5.60 | 5.21 | 7.60 | 9.33 |
| Dureté Calcique |
| 3.11 | 3.28 | 3.60 | 2.69 | 2.19 | 2.16 | 1.59 | 1.69 | 1.43 | 1.71 | 1.84 | 2.17 | 3.18 | 3.04 | 2.69 | 2.34 | 2.42 |
| Ca (mg/L |
| 12.44 | 13.12 | 14.40 | 10.76 | 8.76 | 8.64 | 6.36 | 6.76 | 5.72 | 6.84 | 7.36 | 8.68 | 12.72 | 12.16 | 10.76 | 9.36 | 9.68 |
| Mg (mg/L) |
| 22.14 | 17.30 | 12.61 | 4.43 | 3.58 | 3.22 | 5.88 | 2.20 | 2.20 | 4.45 | 3.75 | 6.03 | 3.27 | 6.20 | 6.10 | 12.73 | 16.72 |
| Na (mg/L) | 200.00 | 0.50 | 0.60 | 0.50 | 0.60 | 0.60 | 0.60 | 1.70 | 1.70 | 1.70 | 0.00 | 0.10 | 0.00 | 3.70 | 2.40 | 4.10 | 0.10 | 0.40 |
| K (mg/L) |
| 2.40 | 2.40 | 2.60 | 2.40 | 2.20 | 2.30 | 0.40 | 0.40 | 0.40 | 1.50 | 1.50 | 1.50 | 2.00 | 1.90 | 2.00 | 3.80 | 4.50 |
| FeTotal (mg/L) | 0.30 | 0.98 | 1.09 | 1.17 | 1.19 | 2.02 | 1.38 | 2.93 | 2.99 | 3.80 | 2.77 | 2.02 | 2.11 | 0.20 | 0.18 | 0.23 | 0.47 | 0.44 |
| NH4 (mg/L) | 1.50 | 0.21 | 0.15 | 0.16 | 0.22 | 0.58 | 0.44 | 0.73 | 0.77 | 0.84 | 0.73 | 0.62 | 0.76 | 0.11 | 0.16 | 0.13 | 0.14 | 0.19 |
| CO3 (mg/L) |
| 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| HCO3 (mg/L) |
| 125.60 | 119.30 | 109.10 | 57.50 | 53.80 | 44.00 | 53.80 | 32.30 | 39.50 | 47.70 | 43.89 | 67.22 | 63.30 | 76.10 | 76.00 | 106.14 | 126.88 |
| Cl (mg/L) | 250.00 | 0.41 | 0.62 | 0.49 | 0.87 | 0.94 | 0.74 | 0.65 | 0.76 | 0.56 | 0.76 | 0.65 | 0.68 | 0.41 | 0.47 | 0.53 | 0.41 | 0.34 |
| SO4 (mg/L) | 250.00 | 6.00 | 6.00 | 6.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 4.00 | 4.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 |
| NO2 (mg/L) | 3.00 | 0.01 | 0.01 | 0.04 | 0.00 | 0.01 | 0.06 | 0.02 | 0.04 | 0.04 | 0.02 | 0.02 | 0.00 | 0.02 | 0.00 | 0.01 | 0.01 | 0.00 |
| NO3 (mg/L) | 50.00 | 16.72 | 5.72 | 6.60 | 1.32 | 0.44 | 1.32 | 3.52 | 7.04 | 5.72 | 3.08 | 0.44 | 0.44 | 0.44 | 0.44 | 0.44 | 0.44 | 0.44 |
| PO4 (mg/L) |
| 0.19 | 0.48 | 0.48 | 3.68 | 0.56 | 0.50 | 0.41 | 0.37 | 0.18 | 0.82 | 0.63 | 0.20 | 0.39 | 0.29 | 0.22 | 0.44 | 0.26 |
| P (mg/L) |
| 0.06 | 0.16 | 0.16 | 1.20 | 0.18 | 0.16 | 0.13 | 0.12 | 0.06 | 0.27 | 0.21 | 0.07 | 0.13 | 0.09 | 0.07 | 0.14 | 0.08 |
| F (mg/L) | 1.50 | 0.08 | 0.16 | 0.15 | 0.02 | 0.02 | 0.18 | 0.12 | 0.10 | 0.02 | 0.16 | 0.07 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 |
| CN total (mg/L) | 0.07 | 0.18 | 0.12 | 0.11 | 0.12 | 0.05 | < | < | 0.15 | < | 0.23 | 0.21 | 0.23 | 0.01 | 0.03 | 0.01 | <0.005 | 0.00 |
| Al (mg/L) | 0.20 | 1.28 | | 1.51 | 0.10 | 0.92 | 1.77 | 0.01 | | 0.47 | 0.82 | 0.11 | 0.57 | 0.64 | 0.71 | 0.19 | 1.50 | 0.02 |
| As (µg/l) | 10.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 21.39 | 2.19 | 7.54 | 4.12 | 5.25 | 3.92 | 2.61 | 0.00 | 6.85 | 0.00 | 0.00 | 0.00 |
| Cr total (mg/L) | 0.05 | | 0.01 | | | 0.01 | | | | | | | | | 0.01 | | | 0.02 |
| Pb (mg/L) | 0.01 | 0.03 | 0.03 | 0.03 | 0.05 | 0.03 | 0.02 | 0.05 | 0.04 | 0.06 | 0.04 | 0.04 | 0.06 | 0.03 | | | | |
| Zn (mg/L) | 3.00 | 0.00 | 0.01 | 0.01 | 0.01 | 0.00 | 0.00 | 0.00 | 0.01 | 0.04 | 0.01 | 0.10 | 0.11 | 0.02 | 0.02 | 0.02 | 0.01 | 0.02 |