This article demonstrates that the conclusions environmental inequality researchers draw vary according to the definitions of environmental inequality they employ and that researchers can use a single set of results to test for the existence of multiple forms of environmental inequality. In order to illustrate these points, I set forth five definitions of environmental inequality, list the kinds of evidence we must obtain in order to determine whether each form of environmental inequality exists, and show how conclusions drawn from several recent environmental inequality studies vary depending on the definition of environmental inequality we employ. My goal is not to show that any one definition is superior to the others; nor am I trying to generalize from the studies reported here to a broader set of research findings. Instead, my goal is to a) show that we can use a single set of results to address a variety of environmental justice concerns and b) demonstrate that our interpretations of environmental inequality research have been too narrowly focused on one set of environmental inequality outcomes.