In 2020, a group of researchers began testing Houston's wastewater to collect data to help identify trends at the community level. Now, the team's work has been rounded up to use as an online resource.

The Houston Health Department and Rice University launched the dashboard on September 22. The information comes from samples collected from the city's 39 wastewater treatment plants and many HISD schools.

"This new dashboard is another tool Houstonians can use to gauge the situation and make informed decisions to protect their families," says Dr. Loren Hopkins, chief environmental science officer for the health department and professor in the practice of statistics at Rice University, in a news release. "A high level of virus in your neighborhood's wastewater means virus is spreading locally and you should be even more stringent about masking up when visiting public places."

The health department, Houston Water, Rice University, and Baylor College of Medicine originally collaborated on the wastewater testing. Baylor microbiologist Dr. Anthony Maresso, director of BCM TAILOR Labs, led a part of the research.

"This is not Houston's first infectious disease crisis," Maresso says in an earlier news release. "Wastewater sampling was pioneered by Joseph Melnick, the first chair of Baylor's Department of Molecular Virology and Microbiology, to get ahead of polio outbreaks in Houston in the 1960s. This work essentially ushered in the field of environmental virology, and it began here at Baylor. TAILOR Labs is just continuing that tradition by providing advanced science measures to support local public health intervention."

It's an affordable way to track the virus, says experts. People with COVID-19 shed viral particles in their feces, according to the release, and by testing the wastewater, the health department can measure important infection rate changes.

The dashboard, which is accessible online now, is color-coded by the level of viral load in wastewater samples, as well as labeled with any recent trend changes. Houstonians can find the interactive COVID-19 wastewater monitoring dashboard, vaccination sites, testing sites, and more information at houstonemergency.org/covid19.