Opportunistic pathogens relative to physicochemical factors in water storage tanks

S. N. Al-Bahry, A. E. Elshafie, R. Victor, I. Y. Mahmoud, J. A. Al-Hinai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Household water in Oman, as well as in other countries in the region, is stored in tanks placed on house roofs that can be subjected to physicochemical factors which can promote microbial growth, including pathogens and opportunistic pathogens which pose health risks. Water samples were collected from 30 houses in a heavily populated suburb of Muscat. The tanks used were either glass reinforced plastic (GRP), polyethylene or galvanised iron (GI). Heterotrophic bacteria, coliforms, faecal coliforms and iron sulphur bacteria varied significantly in the three tanks. Yeast and mould count showed significant variations. Isolation of Aeromonas spp., fluorogenic and pathogenic Pseudomonas, Pasteurella, Salmonella, Serratia and Tatumella, and Yersinia and Legionella in biofilms varied in the three tanks. The fungi isolates in the three tanks were Penicillium, Cladosporium and Aspergillus. Nephelometric turbidity unit, threshold odour number and free chlorine varied significantly in the three tanks. True colour unit values did not show a significant difference; however, GRP tanks had algae, autotrophic and pigmented microorganisms. In addition, GI tanks had sediments and corrosion. The results of this investigation are important to evaluate the status of the present household water tanks in countries with high annual temperatures, which may affect public health.

Original languageEnglish
Pages (from-to)382-393
Number of pages12
JournalJournal of Water and Health
Volume9
Issue number2
DOIs
Publication statusPublished - 2011

Fingerprint

storage tank
water storage
Oman
Iron
pathogen
iron
Plastics
Glass
Water
Fungi
glass
plastic
Pasteurella
Bacteria
Serratia
Cladosporium
Aeromonas
Yersinia
Legionella
coliform bacterium

Keywords

  • House storage tanks
  • Opportunistic pathogens
  • Physicochemical
  • Water

ASJC Scopus subject areas

  • Water Science and Technology
  • Waste Management and Disposal
  • Infectious Diseases
  • Microbiology (medical)
  • Public Health, Environmental and Occupational Health

Cite this

Opportunistic pathogens relative to physicochemical factors in water storage tanks. / Al-Bahry, S. N.; Elshafie, A. E.; Victor, R.; Mahmoud, I. Y.; Al-Hinai, J. A.

In: Journal of Water and Health, Vol. 9, No. 2, 2011, p. 382-393.

Research output: Contribution to journalArticle

@article{efc82d67aea44f32bac37c6be75b201a,
title = "Opportunistic pathogens relative to physicochemical factors in water storage tanks",
abstract = "Household water in Oman, as well as in other countries in the region, is stored in tanks placed on house roofs that can be subjected to physicochemical factors which can promote microbial growth, including pathogens and opportunistic pathogens which pose health risks. Water samples were collected from 30 houses in a heavily populated suburb of Muscat. The tanks used were either glass reinforced plastic (GRP), polyethylene or galvanised iron (GI). Heterotrophic bacteria, coliforms, faecal coliforms and iron sulphur bacteria varied significantly in the three tanks. Yeast and mould count showed significant variations. Isolation of Aeromonas spp., fluorogenic and pathogenic Pseudomonas, Pasteurella, Salmonella, Serratia and Tatumella, and Yersinia and Legionella in biofilms varied in the three tanks. The fungi isolates in the three tanks were Penicillium, Cladosporium and Aspergillus. Nephelometric turbidity unit, threshold odour number and free chlorine varied significantly in the three tanks. True colour unit values did not show a significant difference; however, GRP tanks had algae, autotrophic and pigmented microorganisms. In addition, GI tanks had sediments and corrosion. The results of this investigation are important to evaluate the status of the present household water tanks in countries with high annual temperatures, which may affect public health.",
keywords = "House storage tanks, Opportunistic pathogens, Physicochemical, Water",
author = "Al-Bahry, {S. N.} and Elshafie, {A. E.} and R. Victor and Mahmoud, {I. Y.} and Al-Hinai, {J. A.}",
year = "2011",
doi = "10.2166/wh.2011.054",
language = "English",
volume = "9",
pages = "382--393",
journal = "Journal of Water and Health",
issn = "1477-8920",
publisher = "IWA Publishing",
number = "2",

}

TY - JOUR

T1 - Opportunistic pathogens relative to physicochemical factors in water storage tanks

AU - Al-Bahry, S. N.

AU - Elshafie, A. E.

AU - Victor, R.

AU - Mahmoud, I. Y.

AU - Al-Hinai, J. A.

PY - 2011

Y1 - 2011

N2 - Household water in Oman, as well as in other countries in the region, is stored in tanks placed on house roofs that can be subjected to physicochemical factors which can promote microbial growth, including pathogens and opportunistic pathogens which pose health risks. Water samples were collected from 30 houses in a heavily populated suburb of Muscat. The tanks used were either glass reinforced plastic (GRP), polyethylene or galvanised iron (GI). Heterotrophic bacteria, coliforms, faecal coliforms and iron sulphur bacteria varied significantly in the three tanks. Yeast and mould count showed significant variations. Isolation of Aeromonas spp., fluorogenic and pathogenic Pseudomonas, Pasteurella, Salmonella, Serratia and Tatumella, and Yersinia and Legionella in biofilms varied in the three tanks. The fungi isolates in the three tanks were Penicillium, Cladosporium and Aspergillus. Nephelometric turbidity unit, threshold odour number and free chlorine varied significantly in the three tanks. True colour unit values did not show a significant difference; however, GRP tanks had algae, autotrophic and pigmented microorganisms. In addition, GI tanks had sediments and corrosion. The results of this investigation are important to evaluate the status of the present household water tanks in countries with high annual temperatures, which may affect public health.

AB - Household water in Oman, as well as in other countries in the region, is stored in tanks placed on house roofs that can be subjected to physicochemical factors which can promote microbial growth, including pathogens and opportunistic pathogens which pose health risks. Water samples were collected from 30 houses in a heavily populated suburb of Muscat. The tanks used were either glass reinforced plastic (GRP), polyethylene or galvanised iron (GI). Heterotrophic bacteria, coliforms, faecal coliforms and iron sulphur bacteria varied significantly in the three tanks. Yeast and mould count showed significant variations. Isolation of Aeromonas spp., fluorogenic and pathogenic Pseudomonas, Pasteurella, Salmonella, Serratia and Tatumella, and Yersinia and Legionella in biofilms varied in the three tanks. The fungi isolates in the three tanks were Penicillium, Cladosporium and Aspergillus. Nephelometric turbidity unit, threshold odour number and free chlorine varied significantly in the three tanks. True colour unit values did not show a significant difference; however, GRP tanks had algae, autotrophic and pigmented microorganisms. In addition, GI tanks had sediments and corrosion. The results of this investigation are important to evaluate the status of the present household water tanks in countries with high annual temperatures, which may affect public health.

KW - House storage tanks

KW - Opportunistic pathogens

KW - Physicochemical

KW - Water

UR - http://www.scopus.com/inward/record.url?scp=79958729832&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79958729832&partnerID=8YFLogxK

U2 - 10.2166/wh.2011.054

DO - 10.2166/wh.2011.054

M3 - Article

C2 - 21942202

AN - SCOPUS:79958729832

VL - 9

SP - 382

EP - 393

JO - Journal of Water and Health

JF - Journal of Water and Health

SN - 1477-8920

IS - 2

ER -