Microbiological survey of private roof water tanks in Culiacan, Mexico

Cristobal Chaidez; Aurora Candil-Ruiz; Charles P. Gerba

doi:10.1080/10934529909376942

Microbiological survey of private roof water tanks in Culiacan, Mexico

Cristobal Chaidez, Aurora Candil-Ruiz, Charles P. Gerba

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

A survey was conducted in Culiacan, Mexico on the water quality of private roof water tanks (PRWT). Heterotrophic bacteria, total and fecal coliforms, Pseudomonas aeruginosa, enteroviruses, and protozoan parasites (Cryptosporidium oocysts and Giardia cyst) were enumerated in 25 PRWT samples. Physico-chemical parameters such as pH, temperature, turbidity, and residual chlorine were also examined. P. aeruginosa was found in 28% of the samples; 32% also contained total coliforms, and 20% Escherichia coli. Heterotrophic plate count (HPC) bacteria were found in all of the samples with concentrations between 10² and 10⁵ CFU/mL. No enteroviruses or protozoan parasites were detected suggesting adequate protection from human or large animal contamination.

Original language	English (US)
Pages (from-to)	1967-1978
Number of pages	12
Journal	Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume	34
Issue number	10
DOIs	https://doi.org/10.1080/10934529909376942
State	Published - 1999

Keywords

Coliforms
Enteroviruses
Heterotrophic bacteria
Parasites
Pseudomonas aeruginosa
Water tanks

ASJC Scopus subject areas

Environmental Engineering

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10.1080/10934529909376942

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abstract = "A survey was conducted in Culiacan, Mexico on the water quality of private roof water tanks (PRWT). Heterotrophic bacteria, total and fecal coliforms, Pseudomonas aeruginosa, enteroviruses, and protozoan parasites (Cryptosporidium oocysts and Giardia cyst) were enumerated in 25 PRWT samples. Physico-chemical parameters such as pH, temperature, turbidity, and residual chlorine were also examined. P. aeruginosa was found in 28% of the samples; 32% also contained total coliforms, and 20% Escherichia coli. Heterotrophic plate count (HPC) bacteria were found in all of the samples with concentrations between 102 and 105 CFU/mL. No enteroviruses or protozoan parasites were detected suggesting adequate protection from human or large animal contamination.",

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AU - Chaidez, Cristobal

AU - Candil-Ruiz, Aurora

AU - Gerba, Charles P.

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AB - A survey was conducted in Culiacan, Mexico on the water quality of private roof water tanks (PRWT). Heterotrophic bacteria, total and fecal coliforms, Pseudomonas aeruginosa, enteroviruses, and protozoan parasites (Cryptosporidium oocysts and Giardia cyst) were enumerated in 25 PRWT samples. Physico-chemical parameters such as pH, temperature, turbidity, and residual chlorine were also examined. P. aeruginosa was found in 28% of the samples; 32% also contained total coliforms, and 20% Escherichia coli. Heterotrophic plate count (HPC) bacteria were found in all of the samples with concentrations between 102 and 105 CFU/mL. No enteroviruses or protozoan parasites were detected suggesting adequate protection from human or large animal contamination.

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KW - Enteroviruses

KW - Heterotrophic bacteria

KW - Parasites

KW - Pseudomonas aeruginosa

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Microbiological survey of private roof water tanks in Culiacan, Mexico

Abstract

Keywords

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