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COVID-19

COVID-19 Wastewater Monitoring Improves Prevalence Prediction

Strategic Insights

— 2 min read

Researchers at the University of Miami published a report on the effectiveness of measuring severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) in wastewater to understand COVID-19 cases within a community. The study suggested that incorporating physical-chemical water quality parameters, such as pH, into wastewater-based epidemiology programs can improve correlations between SARS-CoV-2 RNA levels in wastewater and COVID-19 prevalence, especially in smaller sewersheds. The research concluded that pH was the main parameter showing promise in improving associations between wastewater SARS-CoV-2 and COVID-19 cases.

Key Takeaways:

  • The study found that measuring SARS-CoV-2 in wastewater can be used to understand COVID-19 cases within a community.
  • Incorporating physical-chemical water quality parameters, such as pH, into wastewater-based epidemiology programs can improve correlations between SARS-CoV-2 RNA levels in wastewater and COVID-19 prevalence.
  • The study concluded that pH was the main parameter showing promise in improving associations between wastewater SARS-CoV-2 and COVID-19 cases.
  • The research observed benefits of including pH in wastewater-based epidemiology programs at the cluster sewershed scale (population of a few thousand), with a decrease in root-mean square error (RMSE) from 6.9 to 6.5 cases per week.
  • The study suggested that including pH in wastewater-based epidemiology programs may improve correlations between wastewater SARS-CoV-2 and COVID-19 prevalence more frequently when evaluating the cluster scale compared to the community scale.
  • The research highlighted the simplicity of measuring physical-chemical water quality parameters as a component of wastewater-based epidemiology programs, especially in upstream areas.
  • The study's findings have been peer-reviewed and published in the Journal of Environmental Engineering.
  • The research was funded by several organizations, including the National Institutes of Health (NIH), the University of Miami, and the Florida-based ACEV Foundation.

Statistics:

  • The study observed a decrease in RMSE from 6.9 to 6.5 cases per week at the cluster sewershed scale after incorporating pH into wastewater-based epidemiology programs.
  • At the community sewershed scale, benefits were observed only for the Delta wave, with a decrease in RMSE from 539 to 430 cases per week.
  • The study found that pH improved correlations between wastewater SARS-CoV-2 and COVID-19 prevalence more frequently at the cluster scale compared to the community scale.
  • The research highlighted the importance of measuring physical-chemical water quality parameters, such as pH, as a component of wastewater-based epidemiology programs.
  • The study concluded that wastewater-based epidemiology programs, including pH measurements, can be a valuable tool for understanding COVID-19 cases within a community.

Sources:

  • NewsRx. Data on COVID-19 Reported by Researchers at University of Miami (Inclusion of Physical-chemical Water Quality Measurements Can Improve Associations Between Sars-cov-2 Rna Levels In Wastewater and Covid-19 Cases Within Smaller Sewersheds). Medical Letter on the CDC & FDA. September 7, 2025; p 106.

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