COVID-19 in Wastewater May Be Serious Threat

“There is ample reason to be concerned about how long coronaviruses survive in wastewater and how it impacts natural water sources,” says lead author Dr. Edo Bar-Zeev of the BGU Zuckerberg Institute. “Can wastewater contain enough coronaviruses to infect people? The simple truth is that we do not know enough and that needs to be rectified as soon as possible.”

Bar-Zeev, and his postdoc student, Anne Bogler, together with other renowned researchers, indicate that sewage leaking into natural watercourses might lead to infection via airborne spray. Similarly, treated wastewater used to fill recreational water facilities, like lakes and rivers, could also become sources of contagion. Lastly, fruits and vegetables irrigated with wastewater that were not properly disinfected could also be an indirect infection route.

The research team recommends immediate, new research to determine the level of potential infection, if any, and how long coronaviruses last in various bodies of water and spray.

“Wastewater treatment plants need to upgrade their treatment protocols and in the near future also advance toward tertiary treatment through micro- and ultra-filtration membranes, which successfully remove viruses,” Bar-Zeev and his colleagues say.