Wastewater Surveillance at the Guelph Campus

The University of Guelph monitors its residences’ wastewater for SARS-CoV-2, the virus that causes COVID-19, to help identify and act on risks in order to further protect our community. 

The virus may be shed in the feces of those infected with SARS-CoV-2 days before they begin to feel ill. This wastewater surveillance scans samples in a non-invasive way. Samples are an aggregate of all wastewater coming from a particular residence building, and cannot identify any particular person.

Green – low to no signal

Yellow – low to moderate signal

Red – moderate to high signal

– The signal compared to the previous day has increased, decreased or remained the same

For an accessible version of this table, please contact datarequest@uoguelph.ca.

Direct link to Wastewater Report on Tableau


Wastewater samples are collected from the following residence buildings:

  • College Avenue and West Residence
  • East Townhouses and Village
  • Johnston Hall
  • Lambton Hall
  • Maritime Hall
  • Mills Hall
  • Mountain Hall
  • Prairie Hall
  • Wellington Woods, Stone Road Residence

Sampling and analysis are conducted by University of Guelph researchers led by the following interdisciplinary team:

  • Lawrence Goodridge, Food Science (Laboratory analysis)
  • Marc Habash, Environmental Sciences (Laboratory analysis)
  • Heather Murphy, Pathobiology (Wastewater expert)
  • Ed McBean, Engineering (Wastewater expert)

The team relies on critical support and assistance from the University’s Physical Resources department, particularly David Bezanson and Matt Vuk.

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Wastewater results from each building are reviewed daily. The situation is referred for review if the analysis indicates:

  • two consecutive daily yellow or red signals that trend upward, or
  • results that are otherwise notable.

The panel will consider the results in the context of other known factors (e.g., known cases, vaccination rates, etc.).

Panel members:

  • Alison Burnett, Student Wellness
  • Lawrence Goodridge, Food Science
  • Marc Habash, Environmental Science
  • Pat Kelly, Student Housing
  • Andrew Papadopoulos, Population Medicine
  • Liz Snyder, Research Communications
  • Scott Weese, Pathobiology
  • Jennifer Wesley, Office of Research/EHS (coordinator)
  • Lise Trotz-Williams, Wellington Dufferin Guelph Public Health

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Following their review of notable results, the Panel may recommend a response that could include actions such as communications, restricting building access and/or testing community members.  

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