Binge drinking is a prevalent, persistent problem within U.S. university cities. Consequences of students' binge drinking can result in injury, assault, disruption in neighborhoods, and even death. Proponents of one potential solution to the problem, the environmental approach, propose changing the context of drinking by altering factors such as access, price, policies, and enforcement that shape drinking patterns of individuals. Those factors are influenced by multiple entities and jurisdictions requiring collaboration to bring about change. The purpose of the study was to uncover factors of university-community collaboration formed to reduce students' destructive binge drinking. Guided by collaboration theory, this qualitative, single case study was designed to discover the factors and insights that led to a successful university-community collaboration to reduce binge drinking within a safe communities coalition. The primary data were gathered from interviews of 13 participants in the coalition. The results indicated that positive relationships among the members of the coalition were the foundation of success. These relationships were nurtured by administrative support, consistent meetings, open communications, shared leadership, mutual benefits, and a lack of tension. The participants defined success, not only as a reduction in the negative consequences of binge drinking, but also as the maintenance of positive relationships that sustain the collaborative efforts. The implications for social change include the increase of coalitions and improvement of collaboration among college administrators, community leaders, and other agencies attempting to reduce the harms caused by students' binge drinking. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]