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Negative pressures in full-scale distribution system: field investigation, modelling, estimation of intrusion volumes and risk for public health

Marie-Claude Besner, Gabrielle Ebacher, B. S. Jung, B. Karney, J. Lavoie, P. Payment and Michèle Prévost

Article (2010)

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Abstract

Various investigations encompassing microbial characterization of external sources of contamination (soil and trenchwater surrounding water mains, flooded air-valve vaults), field pressure monitoring, and hydraulic and transient analyses were conducted in the same distribution system where two epidemiological studies showing an increase in gastrointestinal illness for people drinking tap water were conducted in the 1990's. Interesting results include the detection of icroorganisms indicators of fecal contamination in all external sources investigated but at a higher frequency in the water from flooded air-valve vaults, and the recording of 18 negative pressure events in the distribution system during a 17-month monitoring period. Transient analysis of this large and complex distribution system was challenging and highlighted the need to consider field pressure data in the process.

Subjects: 1000 Civil engineering > 1000 Civil engineering
1000 Civil engineering > 1006 Hydrologic engineering
1000 Civil engineering > 1007 Water resources and supply
Department: Department of Civil, Geological and Mining Engineering
Funders: Canadian Water Network
PolyPublie URL: https://publications.polymtl.ca/4788/
Journal Title: Drinking Water Engineering and Science (vol. 3, no. 2)
Publisher: Copernicus Publications
DOI: 10.5194/dwes-3-101-2010
Official URL: https://doi.org/10.5194/dwes-3-101-2010
Date Deposited: 12 May 2021 10:42
Last Modified: 01 Nov 2023 12:44
Cite in APA 7: Besner, M.-C., Ebacher, G., Jung, B. S., Karney, B., Lavoie, J., Payment, P., & Prévost, M. (2010). Negative pressures in full-scale distribution system: field investigation, modelling, estimation of intrusion volumes and risk for public health. Drinking Water Engineering and Science, 3(2), 101-106. https://doi.org/10.5194/dwes-3-101-2010

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