One-size-fits-all therapy has not worked well for a majority of substance users seeking help. New approaches to substance abuse treatment are desperately needed. Traditional models of service delivery offer little, if any, help to people who may not choose abstinence as a goal. To address this concern, the Bridging the Gap Conference was sponsored by the San Francisco Department of Public Health. The overall goals of the conference were to improve standards of care, develop best practice principles for integrating harm reduction approaches into traditional substance abuse services, and increase the accessibility of quality services to people in need of alcohol and drug treatment. G. Alan Marlatt gave a keynote address on the integration of harm reduction therapy into traditional treatment services, an expanded version of which is presented in this article. Such integration would broaden the scope of services available to a larger group of consumers of substance abuse treatment. Furthermore, harm reduction therapy would infuse traditional treatment practices with scientifically-based pragmatism that pays close attention to individual and community public health needs. Because of its tolerance of treatment goals other than abstinence, harm reduction therapy offers the greatest hope to expand the availability of substance abuse services to people who have not benefited from traditional abstinence-based treatment models.