Table 5: Paired sample T-test for difference in concentration of water parameters between streams and wells in rainy season.

PARAMETER PAIR MEAN±SE N SD df TCalc Sig(2-tailed) RMKS
Temperature (oC) Well water
Stream water		 25.5±0.30
26.7±0.24		 15
15		 1.14
0.92		 14
14		 -3.885 0.002 S
pH Well water
Stream water		 6.9±0.15
7.4±0.16		 15
15		 0.59
0.64		 14
14		 -2.563 0.023 S
Turbidity (NTU) Well water
Stream water		 111.35±33.86
68.77±20.91		 15
15		 131.14
81.01		 14
14		 1.765 0.099 NS
EC (µs/cm) Well water
Stream water		 792.2±55.22
651.40±33.70		 15
15		 213.89
130.52		 14
14		 3.902 0.002 S
TDS (mg/l) Well water
Stream water		 444.9±30.50
364.2±18.85		 15
15		 118.13
73.02		 14
14		 4.010 0.001 S
Total coliform(x104 cfu/ml) Well water
Stream water		 6.9±0.69
7.9±0.47		 15
15		 2.67
1.84		 14
14		 -2.356 0.034 S
Faecal coliform(x104 cfu/ml) Well water
Stream water		 7.9±0.59
9.3±0.47		 15
15		 2.29
1.82		 14
14		 -3.029 0.009 S
Aluminium (mg/l) Well water
Stream water		 0.153±0.028
0.535±0.129		 15
15		 0.11
0.50		 14
14		 -2.930 0.011 S
Cadmium (mg/l) Well water
Stream water		 0.014±0.005
0.252±0.100		 15
15		 0.02
0.39		 14
14		 -2.454 0.028 S
Lead (mg/l) Well water
Stream water		 0.016±0.005
0.518±0.167		 15
15		 0.02
0.65		 14
14		 -3.043 0.009 S
Chromium (mg/l) Well water
Stream water		 0.027±0.006
0.372±0.121		 15
15		 0.02
0.47		 14
14		 -2.899 0.012 S

N=Number of Samples SD=Standard Deviation df=Degree of freedom tcalc=Calculated t value Sig (2-tailed)=Significance of 2 tailed test RMKS=Remarks EC=Electrical Conductivity TDS=Total Dissolved Solids Total coliform=Total coliform count Faecal coliform=Faecal coliform count S=Significant NS=Not Signifi