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Table 5

Significant Spearman's correlation coefficient (r) between enteric bacteria and the physicochemical characteristics of water from the well (p = 0.5)

Temp. (°C)pHEC (μS/cm)TDS (mg/l)DO (mg/l)Sal. (ppt)Turb. (NTU)
E. coli −0.14 0.35 0.22 −0.15 −0.05 0.36 0.13 
Faecal coliforms −0.13 0.50 −0.17 −0.43 0.31 −0.34 −0.01 
Salmonella 0.50 −0.03 0.28 0.16 0.50 0.26 − 0.56 
Shigella 0.13 −0.07 −0.07 0.10 0.32 0.16 − 0.61 
Bifidobacterium −0.20 0.19 0.40 0.31 0.38 0.22 −0.06 
Campylobacter −0.18 −0.10 0.13 0.34 0.23 0.50 −0.28 
Clostridium 0.50 −0.02 − 0.53 0.21 0.32 0.14 0.03 
Temp. (°C)pHEC (μS/cm)TDS (mg/l)DO (mg/l)Sal. (ppt)Turb. (NTU)
E. coli −0.14 0.35 0.22 −0.15 −0.05 0.36 0.13 
Faecal coliforms −0.13 0.50 −0.17 −0.43 0.31 −0.34 −0.01 
Salmonella 0.50 −0.03 0.28 0.16 0.50 0.26 − 0.56 
Shigella 0.13 −0.07 −0.07 0.10 0.32 0.16 − 0.61 
Bifidobacterium −0.20 0.19 0.40 0.31 0.38 0.22 −0.06 
Campylobacter −0.18 −0.10 0.13 0.34 0.23 0.50 −0.28 
Clostridium 0.50 −0.02 − 0.53 0.21 0.32 0.14 0.03 

Notes: Values in bold figures indicate significant correlation.

Temp., temperature; EC, electrical conductivity; TDS, total dissolved solids; DO, dissolved oxygen; Sal., salinity; Turb., turbidity; n = 24.

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