https://www.forbes.com/sites/zacharysmith/2022/03/14/coronavirus-rates-jump-in-some-wastewater-testing-sites-even-as-case-counts-decline/
Coronavirus genetic material can be detected in the sewage of people infected with the coronavirus, including people without symptoms. As a result, hundreds of wastewater treatment plants test for the virus, providing an early warning on coronavirus trends.
Watch the Water'
LdR Threatened us about this.