The report notes that the fish kill was traced to a stormwater outfall located near a swim club. The pool owner denied discharging chlorinated water, and the source of the discharge remains unknown, MDE says.

What killed the fish has not yet been determined, says MDE, after “tons of them” were seen floating at the start of the holiday weekend.

After the latest environmental mishap in this part of far South Baltimore, community leaders are calling on Governor Moore to declare the area “an air pollution emergency.”