Microbiological survey of private roof water tanks in Culiacan, Mexico

Cristobal Chaidez, Aurora Candil-Ruiz, Charles P Gerba

Research output: Contribution to journalArticle

1 Citation (Scopus)

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 languageEnglish (US)
Pages (from-to)1967-1978
Number of pages12
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume34
Issue number10
StatePublished - 1999

Fingerprint

Water tanks
Roofs
roof
Bacteria
parasite
bacterium
Chlorine
Turbidity
fecal coliform
cyst
Escherichia coli
Water quality
turbidity
chlorine
Animals
Contamination
water quality
water
animal
temperature

Keywords

  • Coliforms
  • Enteroviruses
  • Heterotrophic bacteria
  • Parasites
  • Pseudomonas aeruginosa
  • Water tanks

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Microbiological survey of private roof water tanks in Culiacan, Mexico. / Chaidez, Cristobal; Candil-Ruiz, Aurora; Gerba, Charles P.

In: Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering, Vol. 34, No. 10, 1999, p. 1967-1978.

Research output: Contribution to journalArticle

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