COVID-19 Current Wastewater Viral Activity Levels Map

https://www.cdc.gov/nwss/rv/COVID19-currentlevels.html?fbclid=IwZXh0bgNhZW0CMTEAAR35ibTUejsByH36RV0aZRlyJVibKnHdLpQ6Fb7V8gtIvbYYL9LOdXzXioY_aem_Wx3m5-Djd0STdVCvWUcBZQ

Wastewater (sewage) can be tested to detect traces of infectious diseases circulating in a community, even if people don’t have symptoms. You can use these data as an early warning that levels of infections may be increasing or decreasing in your community.