Extant research is inconclusive about whether policies that allow citizen participation in environmental regulation reduce pollution. This study attempts to advance our understanding of these new forms of regulation by empirically investigating the effects of State-sponsored right-to-sue and right-to-know provisions. This research utilizes data from the Toxic Release Inventory in a pooled, cross-sectional, time-series analysis of State patterns of industrial toxic emissions. Findings indicate that, net of other predictors, States that have right-to-sue laws or that provide substantial funding for right-to-know programs have significantly lower rates of toxic emissions over time. Results are consistent with the arguments of conflict environmental sociologists, who suggest that, unless citizens are provided real resources to mobilize their interests, citizen participation schemes will tend to be only symbolic gestures