Resumo

RODRIGUEZ, S.C.; ASMUNDIS, C.L.; AYALA, M.T.  e  ARZU, O.R.. Presencia de indicadores microbiológicos en agua para consumo humano en San Cosme (Corrientes, Argentina). Rev. vet. [online]. 2018, vol.29, n.1, pp.9-12. ISSN 1669-6840.  http://dx.doi.org/10.30972/vet.2912779.

Water for consumption should not contain any pathogen, it is necessary to analyze to determine contamination indicator microorganisms. Fecal coliform bacteria indicate fecal contamination and deterioration. Pseudomonas aeruginosa pointing deterioration or re-contamination of the water. In order to establish the presence of these indicators of contamination and assess the microbiological quality of water for human consumption, we worked with two different types of water sources: groundwater (well and drilling) and shallow (lagoon). Samples collected in sterile bottles were kept refrigerated at 4-6°C, determined the most probable number of total coliforms in presumptive phase by the series of five tubes of broth MacConkey and confirmation of positive broth at 37°C brila; presence of fecal coliforms from presumptive positives total coliforms phase, and the presence of P. aeruginosa using selective medium containing crystal violet at 37°C, cetrimide agar pealing at 37°C. In wells with higher values of contamination by fecal coliforms it was recorded, with drilling water source lower risk of contamination. As for P. aeruginosa his presence was recorded in the three water sources, in different periods of time, being the lagoon water source showed higher contamination. According to the Argentine Food Code, these results show the unfitness for consumption of the analyzed waters

Palavras-chave : water; quality; human consumption; bacterial contamination; fecal coliforms; Pseudomonas aeruginosa.

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