The waters off Sandy Point State Park?s east beach still aren?t safe to swim in, and Anne Arundel County Health Department officials continue to look for an explanation.

A health advisory was issued Saturday for the south and east beaches at the popular park on the Chesapeake Bay after routine water sampling showed elevated levels of enterococci bacteria, a bacteria found in the intestines of all warm-blooded animals that is harmful elsewhere. The swimming ban on the south beach was lifted Sunday afternoon.