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Table 3 Microbiological contamination of water samples of monitoring wells and nearest existing tubewell

From: Safe distances between groundwater-based water wells and pit latrines at different hydrogeological conditions in the Ganges Atrai floodplains of Bangladesh

Well no. Depth of well (m) Distance of pit (m) FC/100 ml
Wet season
FS/100 ml FC/100 ml
Midterm
FS/100 ml FC/100 ml
Dry season
FS/100 ml
Manda
 M-1 18.0 2.0 8 2 10 77 0 0
 M-2 18.0 4.5 2 0 4 0 0 0
 M-3 18.0 7.0 0 0 0 0 0 0
 M-4 18.0 9.0 0 0 0 0 0 0
 M-5 21.0 2.0 5 1 2 0 3 6
 M-6 18.0 2.0 17 6 12 0 0 1
 M-7 40.5 2.0 0 0 0 2 4 2
 M-8 40.5 4.5 0 0 0 0 0 0
 N 18.0 9.0 0 0 0 0 0 0
Mohanpur
 M-1 31.0 2.0 0 2 0 0 8 10
 M-2 47.0 2.0 0 0 0 0 0 0
 M-3 31.0 4.5 0 0 0 0 0 0
 M-4 31.0 7.0 0 0 0 0 0 0
 N 39.6 15.0 0 0 0 0 0 0
Bagmara
 M-1 27.5 2.0 2 68 2 2 1 0
 M-2 27.5 2.0 4 3 1 0 0 0
 M-3 27.5 2.0 1 2 0 1 1 1
 M-4 42.5 2.0 0 0 1 60 11 0
 M-5 42.5 4.5 0 0 0 0 0 0
 M-6 27.5 4.5 0 0 0 0 0 0
 M-7 27.5 7.0 0 0 0 0 0 0
 M-8 27.5 9.0 0 0 0 0 0 0
 N 27.5 8.5 0 0 0 0 0 0
  1. N nearest existing tubewells, M monitoring well, FC faecal coliforms, FS faecal streptococci