COVID-19 Wastewater Surveillance Program
The Wisconsin State Laboratory of Hygiene (WSLH) in partnership with UW-Milwaukee School of Freshwater Sciences, is embarking on an exciting new study funded by the Wisconsin Department of Health Services, to determine whether, and to what extent, the SARS-CoV-2 virus (the virus causing COVID-19) is circulating within communities in Wisconsin. We propose to accomplish this by routinely monitoring the amount of genetic material of SARS-CoV-2 present in wastewater.

Kayley Janssen pipettes sewage samples before beginning the filtration process.
SARS-CoV-2 is shed from humans in several ways, including the fecal matter. Many people infected by the virus have very mild or no symptoms, which makes them less likely to be tested in a clinical setting and identified as possible carriers of COVID-19. Sanitary sewer systems collect and aggregate wastewater to a central location, so that by the time it reaches the wastewater treatment facility (WWTF) it is a well-mixed sample of many households and businesses; thus by sampling the influent at the WWTF a representative snapshot of the whole community served by WWTF can be obtained. This approach will not replace existing public health monitoring systems, but will supplement them.
Wastewater Facility Recruitment Letter
COVID-19 Wastewater Surveillance FAQs
COVID-19 Wastewater Surveillance Glossary
WDHS COVID-19: Wisconsin Coronavirus Wastewater Monitoring Network
For more information, contact:
Email: covidsewageteam@slh.wisc.edu
Phone: 608-263-2444
In the News
Public Health Madison-Dane County – Can Wastewater Data Predict Future COVID Surges?
WKOW-TV – Researchers use sequencing to detect variants of COVID-19 in waste water
WI Public Radio – Wastewater surveillance a helpful tool in detecting new COVID-19 variants
Spectrum News1 – COVID-19 down the drain: What wastewater can tell us about our pandemic future
WKOW-TV – ‘Everybody has to poop’: How wastewater can help predict COVID-19 trends in Wisconsin

Dagmara Antkiewicz (seated) and Kayley Janssen analyze test data.