Recorded Webinar: COVID-19 Wastewater Surveillance

Emerging Issues

Our COVID-19 webinars continued on August 27, 2020 with another deep dive into the emerging role of wastewater surveillance. Collecting samples from the sewershed and at the treatment plant can help communities track coronavirus and gain early-warning signs about potential community spread.

We heard from leading state, national, and international experts about the latest research at Stanford University, in the State of Michigan, and in Spain.

Some speakers have been removed from the recording at their request.

Speakers and topics

  • Introducer: Wendy Wert, CWEA President, LACSD
  • Moderator: Greg Kester, Director of Renewable Resource Programs, CASA
  • Dr. Anna Mehrotra and Dr. Greta Zornes, CDM Smith – Update on SARS-CoV-2 Monitoring in Detroit
  • Dr. Pablo Calabuig – Go Aigua – How Spain Implemented a Large-Scale SARS-COV-2 Sewer Surveillance Program for 10+ million People

Wastewater surveillance is a technique that can help identify within a localized population the distribution (occurrence, trends or hot spots) from asymptomatic and symptomatic individuals and can assist public health officials in their role of making informed policy decisions to mitigate or prevent future spread within a community.

Sponsored by GT Molecular

About the webinar

This webinar is organized by CWEA’s Education Team in partnership with the California Association of Sanitation Agencies (CASA).

During the webinar registration process, you will be able to provide information about your agency’s use of wastewater surveillance, or leave the questions blank if you don’t know. We’ll share, agency to agency, what everyone is learning about this emerging public health monitoring process.

Live webinar participants who participate in the full webinar through a personal computer, smartphone or tablet will receive 1.8 contact hours toward all CWEA technical certifications.


Moderator: Greg Kester, Director of Renewable Resource Programs, CASA
Greg serves as both the technical and programmatic contact for CASA members and conduit for emerging issues on state and federal level on all biosolids, renewable energy, recycled water, and related issues. Prior to joining CASA, Greg served as the state biosolids coordinator for the Wisconsin Department of Natural Resources. He represented all states in the nation, by their election, to USEPA on all biosolids issues. He served on the National Academy of Sciences Committee which evaluated federal biosolids regulations and produced the 2002 report: Biosolids Applied to Land: Advancing Standards and Practices. Greg holds a BS in Civil and Environmental Engineering from the University of Wisconsin – Madison and is a registered PE in Wisconsin. 

Pablo Calabuig
Pablo Calabuig is CEO of GoAigua Inc, the digital subsidiary of the Spain-based water Group (Global Omnium) that is transforming utilities into smarter, more proactive and more resilient entities through digital transformation. He graduated in Civil and Environmental Engineer at University of Valencia and U.C. Berkeley. After working in Valencia City’s Water System as a water Engineer, he joined the global consulting Firm McKinsey & Company, where he worked in Digital Transformation, IoT, and telecommunications across the US and Latin America. He recently rejoined his Family Group to lead its digital expansion in North America. 
Global Omnium was one of the first companies in Europe to implement sewer surveillance for SARS-COV-2, and today they are helping health officials in Spain monitor the evolution of the virus in 20+ cities for 10+ million people through detailed sampling programs at a very granular level. 

Anna Mehrotra
Anna is a technical leader in the firm’s wastewater process engineering practice. With more than 15 years of experience, Dr. Mehrotra has performed process analysis and modeling, developed sampling and pilot study plans, and prepared designs for a wide variety of municipal and industrial wastewater treatment applications. She is a licensed PE with a MS in environmental engineering science from Stanford University and a PhD in civil/environmental engineering from UC Berkeley. Anna has worked from CDM Smith offices around the globe – from Boston to Brisbane – and is currently spearheading the firm’s COVID-19 wastewater-based epidemiology research.

Greta Zornes 
Greta Zornes is CDM Smith’s Practice Leader for Water Reuse & Industrial Treatment. She earned a PhD in Public Health from Tulane University and her MS in Environmental Engineering from Manhattan College. Greta has over 20 years of experience in municipal & industrial water treatment & reuse, including 3 years in Australia working on the planning, design and commissioning of advanced water reuse facilities.