The level of the virus RNA “can tell us roughly how many cases can be expected in a population,” says the most recent report on Albany County’s wastewater surveillance. For Albany’s North Plant, the detection level suggests a daily case incidence of 10 to 50 cases per 100,000 people. The same is true for the Bethlehem plant. Albany’s South Plant and Guilderland’s facility each had a detection level suggesting more than 50 cases per 100,000 people, the report says.