Professor Sandra Zellmer spoke on Involuntary Payments for Watershed Services and Habitat, with an emphasis on Fifth Amendment Takings, at the National Workshop on Water Quality Markets, sponsored by the U.S. EPA, the U.S. Dept. of Agriculture, and the University of Nebraska's Water for Food Institute. The Workshop, which took place on September 16 at the University's Innovation Campus, highlighted recent initiatives in market-based approaches to water quality and streamflow improvements. In particular, it focused on markets that reduce costs of cleaning up waterways by allowing sources with high costs to purchase credits from sources that have lower costs of making the same water quality improvement.