The different substance abuse rehab services which are accessible to alcohol and drug addicted people in West Chester, Pennsylvania can vary in a lot of various ways. Some substance abuse rehabilitation services are conducted in a residential or inpatient setting, where individuals remain for the duration of their rehabilitation which provides a more therapeutic treatment setting. Others offer drug and alcohol abuse treatment programs on an outpatient basis which allows for more versatility, although outpatient facilities may not be a suitable substance abuse rehabilitation service for men and women in West Chester, Pennsylvania who are struggling with serious drug addiction issues. Whether inpatient or outpatient alcohol and drug abuse rehabilitation programs are chosen, there are varying lengths of time that people will be required to remain in the alcohol and drug rehab center. For instance, many short-term programs provide programs for 4 weeks or less, while long-term programs will require at least a 12 week stay.