African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5059

Full Length Research Paper

Quality of water for human consumption in a rural area community from Brazil

Felipe Silva de Miranda
  • Felipe Silva de Miranda
  • Health Science Center, Federal University of Recôncavo da Bahia, Brazil.
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Juciene de Jesus Barreto da Silva
  • Juciene de Jesus Barreto da Silva
  • Health Science Center, Federal University of Recôncavo da Bahia, Brazil.
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Luiz Henrique Silva Mota
  • Luiz Henrique Silva Mota
  • Health Science Center, Federal University of Recôncavo da Bahia, Brazil.
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Raíssa da Silva Santos
  • Raíssa da Silva Santos
  • Health Science Center, Federal University of Recôncavo da Bahia, Brazil.
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Ana Lúcia Moreno Amor
  • Ana Lúcia Moreno Amor
  • Health Science Center, Federal University of Recôncavo da Bahia, Brazil.
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Isabella de Matos Mendes da Silva
  • Isabella de Matos Mendes da Silva
  • Health Science Center, Federal University of Recôncavo da Bahia, Brazil.
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  •  Received: 05 October 2017
  •  Accepted: 03 August 2018
  •  Published: 07 August 2018

Abstract

This work aimed at evaluating the bacteriological, parasitological, physical and chemical quality of water intended for human consumption in a community in a rural area of Recôncavo of Bahia (Brazil) and the factors related to a possible contamination. Samples were collected at two different times: at rainy season (August to September, 2015) and dry season (April 2016). The present work evaluated the presence of total coliforms and Escherichia coli; quantified heterotrophic bacteria; performed parasitological techniques of direct examination and modified Faust; analyzed pH, temperature, dissolved oxygen, apparent color, turbidity and salinity; and applied a questionnaire regarding the water source and its storage. Out of the 53 households, 67.9% were in disagreement with bacteriological standards of potability. 5.7% in disagreement with parasitological standards, 92.5% in disagreement with physical and chemical standards and all samples were in disagreement with the parameters allowed and recommended by the Brazilian legislation. The water source, presence of a household reservoir, sewage destination and reservoir cleaning time were significantly related to the bacteriological results. The consumption of this water poses a risk to the population’s health and it could provoke outbreaks of food borne diseases. Effective water treatment and surveillance measurements should be taken in order to minimize risks to human health.

 

Key words: Potable standards, groundwater, indicator microorganisms, contaminated water.