Table 1.
Quantitative enumeration and density estimation of enterococci in surface water samples (n = 15) collected from sites (n = 5) located on river Ganga (Kanpur city) in up-to-down-gradient fashion
| Sampling Site | CFU/100 ml water [Median (Range)] |
MPN index/100 ml water (Lower 95% CI – Upper 95% CI)a | p-Valueb |
|---|---|---|---|
| Site 1 | 32 (23 – 44) | 30 (10 – 110) | |
| Site 2 | 1130 (1034 – 1211) | 220 (100 – 580) | |
| Site 3 | 73000 (67532 – 76848) | 350 (160 – 820) | < 0.0001*** |
| Site 4 | 48000 (43978 – 51078) | 300 (100 – 1300) | |
| Site 5 | 820000 (782841 – 871978) | 1600 (600 – 5300) | |
| Controlc | ND | ND |
aLower 95% CI – Upper 95% CI are adopted from Table 9221.IV, Section 9221C. Estimation of Bacterial density, APHA (1998). bp-Value was calculated using chi square test for trend, χ2 = 1900; df = 1. cSterile Milli Q water used as control. ***Statistically significant at alpha < 0.05.
Abbreviations: ND, Not Detected.