In the fall of 1987, the American Jail Association assisted in the development of model jail-based drug treatment programs at demonstration sites in several metropolitan jails. Much of what is known about jail-based drug treatment has come from these first experimental programs and the many jail-based programs that have followed. This monograph's discussion is based on the collective experience of treatment and corrections personnel, as well as consultants who worked closely with the national demonstration sites. One chapter describes the partnership that logically exists between corrections and drug treatment professionals and details the benefits to the jail environment, the correctional staff, the inmate, and the community derived from jail-based drug treatment of offenders. Another chapter provides a closer look at five models of offender drug treatment. It suggests a methodology that will allow jail administrators and drug treatment personnel to match their fiscal, staffing, facility, and community resources with a suitable drug treatment model. Benefits and expected outcomes of each model are discussed. A chapter explores the critical issues in program development and implementation. These issues include management concerns, staff selection and training, client selection, special treatment issues, and continuity of care. This is followed by a chapter that examines the importance of program evaluation and how it can be accomplished. The final chapter provides an overview of the possible points of linkage between the criminal justice system and drug treatment. A glossary of terms cross-references the two distinct languages of criminal justice and drug treatment. 4 notes