Behavior of pseudomonas aeruginosa and enterobacter aerogenes in water from filter jugs

Rossella Briancesco, Stefania Paduano, Maurizio Semproni, Luca Vitanza, Lucia Bonadonna

Research output: Contribution to journalArticlepeer-review


Careless use conditions of filter jugs were applied to simulate and evaluate the behavior of two ubiquitous aquatic bacterial species, Pseudomonas aeruginosa and Enterobacter aerogenes. According to a reference protocol, nine different jugs of popular brands sold in the Italian market were used for the test. Separately, a suspension of the two bacteria was spiked in water used for filling the jugs. The concentration of the test organisms and total aerobic microbial count (TAMC) was measured daily in the filtered water along a period corresponding to the cartridge lifetime. Results showed a different trend of bacterial behavior. E. aerogenes was detectable exclusively on the first day after jug filling, while P. aeruginosa confirmed its persistence over time in all the jugs and its ability to potentially colonize surfaces and cartridges. The TAMC was detected at a concentration range from 102 to 107 CFU/100 mL in all the tests, high values that were not far from those raised in bottled flat natural mineral water weeks after bottling.

Original languageEnglish
Article number8263
Pages (from-to)1-14
Number of pages14
JournalInternational Journal of Environmental Research and Public Health
Issue number21
Publication statusPublished - Nov 1 2020


  • Drinking water
  • Enterobacter
  • Filter jugs
  • Pseudomonas
  • Total microbial count

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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