Table-2.
Microbiological properties (SPC, MPN) of groundwater.
| Site | Number of samples | SPC | MPN | E. coli | Pathogenic E. coli | ||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 1 | 2 | 3 | ||||
| G1 | 10 | 0-500 | 30 | 1.60c±0.27 | 0-25 | 10 | 3.2b±2.52 | 2 (20) | 0 |
| G2 | 10 | 150-3500 | 100 | 2.83a±0.17 | 0-1600 | 70 | 334.6a±169.51 | 2 (20) | 1 |
| G3 | 10 | 60-1250 | 70 | 2.34ba±0.14 | 0-1600 | 50 | 221.2ba±162.43 | 3 (30) | 1 |
| G4 | 10 | 5-3000 | 70 | 2.40ba±0.30 | 0-25 | 20 | 4.9b±2.79 | 0 | 0 |
| G5 | 10 | 30-300 | 40 | 2.0ca±0.10 | 0-10 | - | 3.2b±1.31 | 0 | 0 |
| G6 | 10 | 75-2000 | 90 | 2.63a±0.13 | 0-550 | 90 | 95ba±57.14 | 9 (90) | 1 |
| overall | 60 | 0-3500 | 66.67 | P=0.001 | 0-1600 | 40 | P=0.094 | 16 (23.3) | 3 (5) |
Values in bracket are in percentages. Mean bearing different superscript in a column differ highly significantly (p<0.01). Means bearing different superscript in a column differ significantly (p<0.05). Figures in bold vary significantly or highly significantly. 1=Recorded range, 2=Percentage of samples out of recommended limit, 3=Mean±SE. SPC=Standard plate count, MPN=Most probable number