Evaluation of the presence and quantification of total coliforms and Escherichia coli in samples of water intended for human consumption from artesian wells

Authors

  • Caroline Rodrigues da Silva Universidade Estadual de Londrina - UEL http://orcid.org/0000-0003-2827-2756
  • Matheus Silva Sanches Universidade Estadual de Londrina - UEL
  • Bruno Henrique Gonçalves de Aguiar Milhim Universidade Estadual de Londrina - UEL
  • Sérgio Paulo Dejato da Rocha Universidade Estadual de Londrina - UEL
  • Jacinta Sanchez Pelayo Universidade Estadual de Londrina - UEL http://orcid.org/0000-0002-5519-2156

Keywords:

Water quality, Escherichia coli, Artesian wells.

Abstract

Water is essential for life and its contamination by pathogenic microorganisms offers great risk to human health and may cause illnesses ranging from mild gastroenteritis to life threatening diseases. Thus, water for human consumption should be free of pathogenic microorganisms and must not contain indicators of faecal contamination such as Escherichia coli presence. Given the importance of drinking water quality for health, this study aimed to verify the bacteriological quality of water used for human consumption from 200 artesian wells located in the city of Cambé - Paraná, from 2013 to 2017. The methodology used for the research of total coliforms and E. coli was the Colilert® chromogenic substrate method. Among the 200 analysed water samples, 113 (56.5%) were contaminated with total coliforms and 35 (17,5%) with E. coli. The analyses carried out during the five-year period allowed finding 14 (7%) treated water samples that showed contamination by bacteria of the coliform group. Based on the results obtained in this study, it is expected that both the population and the public agencies will be aware of the importance of water quality control for the prevention of diseases transmitted by this means.

Author Biographies

Caroline Rodrigues da Silva, Universidade Estadual de Londrina - UEL

Master in Microbiology from the Universidade Estadual de Londrina - UEL

Matheus Silva Sanches, Universidade Estadual de Londrina - UEL

Mestrando em Microbiologia pela Universidade Estadual de Londrina - UEL

Bruno Henrique Gonçalves de Aguiar Milhim, Universidade Estadual de Londrina - UEL

Graduated in Biological Sciences from the Universidade Estadual de Londrina - UEL

Sérgio Paulo Dejato da Rocha, Universidade Estadual de Londrina - UEL

Doctorate in Sciences (Biotechnology) from the Universidade de São Paulo - USP. Adjunct Professor, Department of Microbiology, Universidade Estadual de Londrina - UEL

Jacinta Sanchez Pelayo, Universidade Estadual de Londrina - UEL

Doctorate in Biological Sciences (Microbiology) from the Universidade de São Paulo - USP. Associate Professor, Department of Microbiology, Universidade Estadual de Londrina - UEL

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Published

2019-11-30

How to Cite

1.
Silva CR da, Sanches MS, Milhim BHG de A, Rocha SPD da, Pelayo JS. Evaluation of the presence and quantification of total coliforms and Escherichia coli in samples of water intended for human consumption from artesian wells. Semin. Cienc. Biol. Saude [Internet]. 2019 Nov. 30 [cited 2024 Aug. 24];40(2):129-40. Available from: https://ojs.uel.br/revistas/uel/index.php/seminabio/article/view/33593

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