作者: LAVAUGHN AGARD , CORLIS ALEXANDER , SIMONE GREEN , MICHAEL JACKSON , SANJEEV PATEL
DOI: 10.4315/0362-028X-65.8.1297
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摘要: A microbiological study was conducted to determine the quality of water supply an urban community in San Fernando proper south Trinidad using total coliforms and thermotolerant as indicators pollution. The membrane filter technique used detect on endo agar MFc agar, respectively. residual chlorine levels from reservoir, standpipes along distribution line, households were determined with a commercial test kit. Of 104 drinking samples obtained households, 84 (80.8%), 56 (53.8%), 70 (67.3%) tested positive for coliforms, Escherichia coli, difference statistically significant (P < 0.05, chi2). 81 collected Water Sewerage Authority (WASA) main 38 (46.9%), 13 (16.0%), 27 (33.3%) contaminated by E. respectively, Eight (20.5%) 39 line compared 4 (10.3%) testing coliforms. All five treated reservoir negative There = 0.004) mean standpipes, households. Similarly, level decreased, there increase prevalence 0.0% (treated water) 15.2% (standpipe) 53.5% (household mains) 80.0% water). also 0.001, chi2) WASA 105 coli strains tested, 7 (6.7%), 16 (15.2%), 22 (21.0%) mucoid, hemolytic, non-sorbitol fermenters, It concluded that high degree contamination poses health hazard consumers.