“Human viruses do not replicate in the environment. For a coronavirus to be transferred via the water cycle, it must have the ability to survive in human waste, retain its infectivity, and come in contact with another person. Findings suggest that COVID-19 can be transmitted through human waste.”
“In general, secondary wastewater treatment is credited with removing 1-log (90 percent) of viruses, though broad studies suggest the level of virus removal is highly variable, ranging from insignificant to greater than 2-log removal (99 percent). Because of this variability, the primary process for the inactivation of viruses in wastewater treatment is chemical disinfection and/or by ultraviolet light (UV).”
Read the rest of the article by Nicole McLellan, David Pernitsky, and Arthur Umble