Potential for pathogen intrusion during pressure transients

Mohammad R. Karim, Morteza Abbaszadegan, Mark Lechevallier

Research output: Contribution to journalArticle

110 Citations (Scopus)

Abstract

Pressure transients in drinking water pipelines (i.e., surges) may cause hydraulic pressure gradients, resulting in the potential for intrusion of pathogens present in the external environment into the distribution system. The objectives of this study were to determine the occurrence of indicator microorganisms and pathogens in the vicinity of potable water pipelines and assess the potential for intrusion attributable to transient distribution system pressure changes. As part of an earlier study (Kirmeyer et al, 2001), soil and water samples were collected at sites immediately exterior to drinking water pipelines at eight locations in six states. Samples were then tested for occurrence of total and fecal coliforms, Clostridium perfringens, Bacillus subtilis, coliphage, and enteric viruses. Indicator microorganisms and enteric viruses were detected in more than 50% of the samples examined. Monitoring of pressure transients at a large distribution system indicated that pressure transients occurred frequently, although negative pressures were detected on only one occasion. The results of this study suggest that during negative- or low-pressure events, microorganisms may enter the treated drinking water through pipeline leaks.

Original languageEnglish (US)
Pages (from-to)134-146
Number of pages13
JournalJournal / American Water Works Association
Volume95
Issue number5
StatePublished - May 2003

Fingerprint

Pathogens
pathogen
Water pipelines
Potable water
Drinking Water
drinking water
distribution system
Microorganisms
microorganism
virus
Viruses
Pipeline surges
fecal coliform
Clostridium
pressure gradient
Bacilli
low pressure
Pressure gradient
hydraulics
Pipelines

ASJC Scopus subject areas

  • Water Science and Technology
  • Civil and Structural Engineering

Cite this

Potential for pathogen intrusion during pressure transients. / Karim, Mohammad R.; Abbaszadegan, Morteza; Lechevallier, Mark.

In: Journal / American Water Works Association, Vol. 95, No. 5, 05.2003, p. 134-146.

Research output: Contribution to journalArticle

Karim, Mohammad R. ; Abbaszadegan, Morteza ; Lechevallier, Mark. / Potential for pathogen intrusion during pressure transients. In: Journal / American Water Works Association. 2003 ; Vol. 95, No. 5. pp. 134-146.
@article{7e9109fa5a414917ba28f1a91f0b3388,
title = "Potential for pathogen intrusion during pressure transients",
abstract = "Pressure transients in drinking water pipelines (i.e., surges) may cause hydraulic pressure gradients, resulting in the potential for intrusion of pathogens present in the external environment into the distribution system. The objectives of this study were to determine the occurrence of indicator microorganisms and pathogens in the vicinity of potable water pipelines and assess the potential for intrusion attributable to transient distribution system pressure changes. As part of an earlier study (Kirmeyer et al, 2001), soil and water samples were collected at sites immediately exterior to drinking water pipelines at eight locations in six states. Samples were then tested for occurrence of total and fecal coliforms, Clostridium perfringens, Bacillus subtilis, coliphage, and enteric viruses. Indicator microorganisms and enteric viruses were detected in more than 50{\%} of the samples examined. Monitoring of pressure transients at a large distribution system indicated that pressure transients occurred frequently, although negative pressures were detected on only one occasion. The results of this study suggest that during negative- or low-pressure events, microorganisms may enter the treated drinking water through pipeline leaks.",
author = "Karim, {Mohammad R.} and Morteza Abbaszadegan and Mark Lechevallier",
year = "2003",
month = "5",
language = "English (US)",
volume = "95",
pages = "134--146",
journal = "Journal of the American Water Works Association",
issn = "0003-150X",
publisher = "American Water Works Association",
number = "5",

}

TY - JOUR

T1 - Potential for pathogen intrusion during pressure transients

AU - Karim, Mohammad R.

AU - Abbaszadegan, Morteza

AU - Lechevallier, Mark

PY - 2003/5

Y1 - 2003/5

N2 - Pressure transients in drinking water pipelines (i.e., surges) may cause hydraulic pressure gradients, resulting in the potential for intrusion of pathogens present in the external environment into the distribution system. The objectives of this study were to determine the occurrence of indicator microorganisms and pathogens in the vicinity of potable water pipelines and assess the potential for intrusion attributable to transient distribution system pressure changes. As part of an earlier study (Kirmeyer et al, 2001), soil and water samples were collected at sites immediately exterior to drinking water pipelines at eight locations in six states. Samples were then tested for occurrence of total and fecal coliforms, Clostridium perfringens, Bacillus subtilis, coliphage, and enteric viruses. Indicator microorganisms and enteric viruses were detected in more than 50% of the samples examined. Monitoring of pressure transients at a large distribution system indicated that pressure transients occurred frequently, although negative pressures were detected on only one occasion. The results of this study suggest that during negative- or low-pressure events, microorganisms may enter the treated drinking water through pipeline leaks.

AB - Pressure transients in drinking water pipelines (i.e., surges) may cause hydraulic pressure gradients, resulting in the potential for intrusion of pathogens present in the external environment into the distribution system. The objectives of this study were to determine the occurrence of indicator microorganisms and pathogens in the vicinity of potable water pipelines and assess the potential for intrusion attributable to transient distribution system pressure changes. As part of an earlier study (Kirmeyer et al, 2001), soil and water samples were collected at sites immediately exterior to drinking water pipelines at eight locations in six states. Samples were then tested for occurrence of total and fecal coliforms, Clostridium perfringens, Bacillus subtilis, coliphage, and enteric viruses. Indicator microorganisms and enteric viruses were detected in more than 50% of the samples examined. Monitoring of pressure transients at a large distribution system indicated that pressure transients occurred frequently, although negative pressures were detected on only one occasion. The results of this study suggest that during negative- or low-pressure events, microorganisms may enter the treated drinking water through pipeline leaks.

UR - http://www.scopus.com/inward/record.url?scp=0037527719&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037527719&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0037527719

VL - 95

SP - 134

EP - 146

JO - Journal of the American Water Works Association

JF - Journal of the American Water Works Association

SN - 0003-150X

IS - 5

ER -