How long does Rona survive in wastewater?
Decay of infectious SARS-CoV-2 and surrogates in aquatic environments
We demonstrated that infectivity of SARS-CoV-2 decreases rapidly in filter-sterilised river and seawater water, particularly at higher temperatures. The data therefore suggest that river water and seawater contaminated with sewage containing faecal matter from SARS-CoV-2 infected individuals is unlikely to contain high levels of infectious virus due to the rapid inactivation of the virus in these matrices.
Forever if its anything like corn.