Louisville Water data also show no detections of butyl acrylate or other chemicals of concern in Louisville or at other regional testing sites upriver, in Warsaw, Westport and Carrollton in Kentucky, and at Madison, Indiana.
Testing on water from the Ohio River continues more than 200 times a day.
The spill happened after a train derailed on Feb. 3 in East Palestine, Ohio, near the Pennsylvania border.
Volunteers are being sought from 8-11 a.m. Saturday at Karen Lynch Park on Story Avenue.
