The diverse alcohol and drug abuse rehab services which are offered to drug addicted people in Williamsport, Pennsylvania can differ in a lot of various ways. Quite a few alcohol and drug abuse rehabilitation programs take place in a residential or inpatient setting, where clientele reside for the duration of their rehab which provides a more conducive treatment environment. Others offer substance abuse rehab programs on an outpatient basis which provides a sense of flexibility, though outpatient centers are not always a suitable drug and alcohol abuse rehabilitation service for men and women in Williamsport, Pennsylvania who are struggling with long term addiction problems. Whether or not inpatient or outpatient alcohol and drug abuse treatment programs are selected, there are also different lengths of time that men and women will be required to stay in the drug and alcohol treatment program. For example, some short-term programs provide services for 30 days or less, whereas long-term programs will demand at least a 12 week stay.