You might say COVID-19 testing has gone down the drain. It doesn’t mean it’s no longer a problem. But it’s helping us know how big of a problem. People pass COVID-19 in their feces, which then flows ...

A coalition of top scientists loaded its last set of wastewater samples for analysis Sunday after receiving the final word from San Diego County late last week that the work should cease due to a ...

San Diego County is once again tracking the spread of COVID-19 and other respiratory illnesses through wastewater testing. KPBS health reporter Heidi de Marco explains why this matters and what the ...

Peering into wastewater for public health has a history dating back at least to the late 19 th century, when a biologist in Boston cultured sewage in beef jelly, bouillon, boiled potatoes, and milk to ...