Evaluation of escherichia coli as the main indicator of faecal pollution

Baudišová, Dana

doi:10.1016/s0273-1223(97)00281-3

Cited by 41 publications

(4 citation statements)

References 2 publications

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“…Within that class, Escherichia/Shigella was the dominant OTU. Bacteria of this genus are known human pathogens, as well as indicators for drinking water quality and fecal contamination (Baudišová, 1997; Edberg et al, 2000; Odonkor and Ampofo, 2013), and their increased abundance can be attributed to human impact, likely from urban Makassar. Some of the other potential pathogenic taxa, e.g., Mycobacterium and Staphylococcus , were found at highest relative abundances closer to the mainland.…”

Section: Discussionmentioning

confidence: 99%

Bacterial Community Composition and Potential Driving Factors in Different Reef Habitats of the Spermonde Archipelago, Indonesia

et al. 2017

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Coastal eutrophication is a key driver of shifts in bacterial communities on coral reefs. With fringing and patch reefs at varying distances from the coast the Spermonde Archipelago in southern Sulawesi, Indonesia offers ideal conditions to study the effects of coastal eutrophication along a spatially defined gradient. The present study investigated bacterial community composition of three coral reef habitats: the water column, sediments, and mucus of the hard coral genus Fungia, along that cross-shelf environmental and water quality gradient. The main research questions were: (1) How do water quality and bacterial community composition change along a coastal shelf gradient? (2) Which water quality parameters influence bacterial community composition? (3) Is there a difference in bacterial community composition among the investigated habitats? For this purpose, a range of key water parameters were measured at eight stations in distances from 2 to 55 km from urban Makassar. This was supplemented by sampling of bacterial communities of important microbial habitats using 454 pyrosequencing. Findings revealed that the population center Makassar had a strong effect on the concentrations of Chlorophyll a, suspended particulate matter (SPM), and transparent exopolymer particles (TEP), which were all significantly elevated at the inshore compared the other seven sites. Shifts in the bacterial communities were specific to each sampled habitat. Two OTUs, belonging to the genera Escherichia/Shigella (Gammaproteobacteria) and Ralstonia (Betaproteobacteria), respectively, both dominated the bacterial community composition of the both size fractions of the water column and coral mucus. The sampled reef sediments were more diverse, and no single OTUs was dominant. There was no gradual shift in bacterial classes or OTUs within the sampled habitats. In addition, we observed very distinct communities between the investigated habitats. Our data show strong changes in the bacterial community composition at the inshore site for water column and sediment samples. Alarmingly, there was generally a high prevalence of potentially pathogenic bacteria across the entire gradient.

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Section: Discussionmentioning

confidence: 99%

Bacterial Community Composition and Potential Driving Factors in Different Reef Habitats of the Spermonde Archipelago, Indonesia

et al. 2017

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“…El Acuerdo Gubernativo del Reglamento de las Descargas y Reúso de Aguas Residuales y de la Disposición de Lodos (2006) establece límites para la presencia de coliformes fecales en el agua residual, pero estos no son el principal indicador de contaminación fecal en el agua. La bacteria Escherichia coli se encuentra en todas las heces fecales de mamíferos, y ha sido demostrado que es el mejor indicador de contaminación fecal (Baudišová, 1997;Edberg, Rice, Karlin, & Allen, 2000).…”

Section: Contenidounclassified

¿Por qué continúa la contaminación de aguas en Guatemala?

Sigui¹

2016

CTS

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Para la protección ambiental se han emitido en Guatemala tres reglamentos que se refieren al agua residual, y una ley de protección y mejoramiento del medio ambiente. El último reglamento emitido es el Acuerdo Gubernativo 236-2006, denominado Reglamento de las Descargas y Reúso de Aguas Residuales y de la Disposición de Lodos, que derogó los reglamentos anteriores (Acuerdo Gubernativo del Reglamento de Requisitos Mínimos y sus Límites Máximos Permisibles de Contaminación para la Descarga de Aguas Servidas (1989) y Acuerdo Gubernativo del Reglamento de Descargas de Aguas Residuales a Cuerpos Receptores (2005)). El problema es que, el reglamento vigente tiene varias deficiencias y en muchos aspectos no mejoró lo que se había estipulado en los acuerdos previos, además al compararlo con los reglamentos equivalentes de México y Costa Rica, el reglamento guatemalteco es ineficaz. Entre las carencias se encuentra que; no diferencia los cuerpos de agua receptores, el plazo de cumplimiento es largo, no distingue tipos de industria, se redujeron las categorías de reúso de agua residual, disminuye el involucramiento del Ministerio de Salud Pública y Asistencia Social, la periodicidad de muestreos es menor, no se considera la medición de demanda química de oxígeno, la medición de color en el agua no es la adecuada y no considera la presencia de parásitos en las descargas. En virtud de la protección ambiental que el país requiere, es necesario realizar una revisión al Acuerdo Gubernativo de 2006 del Reglamento de las Descargas y Reúso de Aguas Residuales y de la Disposición de Lodos, que debería concluir con la derogación del reglamento y la emisión de uno nuevo más completo, mejorado y que se base en investigación científica.

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“…deriving from organic wastes with related risks for soil, plant and human health (Singh, 2021). E. coli is the main indicator of fecal contamination in most of international legislation for water quality (Baudišová, 1997); moreover it provides a simple standardized method to assess the efficacy of wastewater treatment processes (Motlagh and Yang, 2019;Nwaneri et al, 2018). Bacterial content in wastewater can have a broad concentration range (1-10 log CFU L − 1 ), depending on its origin, environmental parameters (e.g., temperature, C/N ratio) treatment level and disinfection system (e.g., peracetic acid (PAA), UV) (Singh, 2021;Chen et al, 2021).…”

Section: Introductionmentioning

confidence: 99%