Sewage linked to fish-gender quirks

From New Orleans, at the e.hormone 2003 Conference

During dry spells, the water in some streams can come mostly from municipal sewage-treatment plants. A new study finds reproductive impairments among fish residing in such waters.

Alan Vajda and his colleagues at the University of Colorado in Boulder sampled white suckers and flathead chubs upstream and downstream of waste-treatment plants on three Colorado rivers.