Officials on Wednesday said the fish consumption advisory for the river from the Delaware, Pennsylvania and New Jersey border to the Chesapeake and Delaware canal has been updated because of falling levels of polychlorinated biphenyls, or PCBs, dioxins and furans, chlorinated pesticides, and mercury.

Officials say it's now OK for healthy adults in general to eat no more than one eight-ounce meal per year, rather than no fish at all. Women of childbearing age and young children are still advised not to eat any fish.