"The wastewater viral activity levels may indicate the risk of infection in an area," the CDC explains.

There are an increasing number of states across the U.S. where "very high" levels of the virus that causes COVID-19 are present in wastewater. According to the U.S. Centers for Disease Control and ...

"Very high" levels of SARS-CoV-2—the virus that causes COVID-19—have been detected in wastewater samples in the U.S. Between October 27 and November 2, wastewater sampling from New Mexico revealed ...

Winter is almost here, so does that mean COVID is rising again? A map of COVID in the U.S. shows about 18 states have high or very high viral activity, and 21 states have low or minimal activity.