Parameters (n = 40) | Sites | min. | max. | SD | Mean ± SE | CV (%) | P value for F test | Safari et al. [26] | Standard [24] | Standard [23] |
pH | Bassa.PS-Ishaka1 | 5.77 | 5.91 | 0.04 | 5.82 ± 0.01 | 0.63 | 0.00* | 6.03 | 5.5 - 8.5 | 6.5 - 8.5 |
Kanya.TC-Ishaka2 | 5.72 | 7.52 | 0.47 | 7.06 ± 0.07 | 6.61 | |||||
BTS-Central1 | 5.60 | 6.39 | 0.27 | 5.84 ± 0.04 | 4.64 | |||||
SAGSS-Central2 | 5.58 | 5.82 | 0.07 | 5.68 ± 0.01 | 1.26 | |||||
Nyaka.TC | 5.59 | 5.88 | 0.10 | 5.72 ± 0.02 | 1.67 | |||||
Electrical Conductivity (µS/cm) | Bassa.PS-Ishaka1 | 67.00 | 83.00 | 4.87 | 73.78 ± 0.77 | 6.60 | 0.00* | 176.17 | <1500 | 0 - 300 |
Kanya.TC-Ishaka2 | 34.00 | 72.00 | 11.89 | 59.15 ± 1.88 | 20.10 | |||||
BTS-Central1 | 72.00 | 103.00 | 9.11 | 84.80 ± 1.44 | 10.75 | |||||
SAGSS-Central2 | 72.00 | 88.00 | 5.04 | 79.45 ± 0.80 | 6.35 | |||||
Nyaka.TC | 62.00 | 89.00 | 7.77 | 77.25 ± 1.23 | 10.06 | |||||
Apparent Colour (Pt/Co) | Bassa.PS-Ishaka1 | 0.00 | 11.00 | 3.04 | 5.60 ± 0.48 | 54.22 | 0.00* | 109.00 | <15 | <300 |
Kanya.TC-Ishaka2 | 0.00 | 9.00 | 2.17 | 6.13 ± 0.34 | 35.50 | |||||
BTS-Central1 | 4.00 | 14.00 | 2.32 | 9.50 ± 0.37 | 24.43 | |||||
SAGSS-Central2 | 7.00 | 14.00 | 1.69 | 9.65 ± 0.27 | 17.49 | |||||
Nyaka.TC | 4.00 | 14.00 | 2.23 | 8.80 ± 0.35 | 25.37 | |||||
Turbidity (NTUs) | Bassa.PS-Ishaka1 | 0.83 | 1.99 | 0.40 | 1.44 ± 0.06 | 27.62 | 0.00* | 123.67 | <5.0 | <5.0 |
Kanya.TC-Ishaka2 | 0.27 | 0.88 | 0.18 | 0.46 ± 0.03 | 40.20 | |||||
BTS-Central1 | 1.86 | 3.95 | 0.59 | 2.46 ± 0.09 | 23.94 | |||||
SAGSS-Central2 | 1.84 | 2.39 | 0.17 | 2.05 ± 0.03 | 8.13 | |||||
Nyaka.TC | 1.24 | 2.89 | 0.44 | 1.99 ± 0.07 | 22.05 | |||||
Total Hardness (mg/L) | Bassa.PS-Ishaka1 | 24.00 | 39.00 | 3.90 | 33.05 ± 0.62 | 11.81 | 0.00* | 20.41 | <100 | <100 |
Kanya.TC-Ishaka2 | 58.00 | 65.00 | 1.67 | 60.85 ± 0.26 | 2.75 | |||||
BTS-Central1 | 24.00 | 35.00 | 3.11 | 29.88 ± 0.49 | 10.40 | |||||
SAGSS-Central2 | 20.00 | 26.00 | 1.44 | 23.03 ± 0.23 | 6.26 | |||||
Nyaka.TC | 22.00 | 26.00 | 1.29 | 24.15 ± 0.20 | 5.35 | |||||
Total Iron (mg/L) | Bassa.PS-Ishaka1 | 0.060 | 0.230 | 0.043 | 0.136 ± 0.007 | 31.54 | 0.00* | - | <0.2 | <0.3 |
Kanya.TC-Ishaka2 | 0.000 | 0.100 | 0.024 | 0.036 ± 0.004 | 66.48 | |||||
BTS-Central1 | 0.030 | 0.160 | 0.049 | 0.076 ± 0.008 | 63.75 | |||||
SAGSS-Central2 | 0.080 | 0.190 | 0.032 | 0.111 ± 0.005 | 28.87 | |||||
Nyaka.TC | 0.040 | 0.140 | 0.024 | 0.096 ± 0.004 | 24.86 | |||||
Residual Alum (mg/L) | Bassa.PS-Ishaka1 | 0.060 | 0.170 | 0.027 | 0.108 ± 0.004 | 24.83 | 0.02* | - | <0.2 | <0.2 |
Kanya.TC-Ishaka2 | 0.000 | 0.160 | 0.037 | 0.092 ± 0.006 | 40.63 | |||||
BTS-Central1 | 0.070 | 0.160 | 0.026 | 0.113 ± 0.004 | 22.81 | |||||
SAGSS-Central2 | 0.060 | 0.150 | 0.022 | 0.104 ± 0.004 | 21.39 | |||||
Nyaka.TC | 0.000 | 0.150 | 0.029 | 0.101 ± 0.005 | 28.78 |