To ensure that drug rehab is accessible to individuals with co-occurring mental health disorders, Partial Hospitalization drug and alcohol rehab programs in Williamsburg, Massachusetts can provide treatment in certain hospital and mental health clinic facilities for those who need rehab. Partial Hospitalization is the term used for this kind of drug treatment program, due to the fact that the person receives drug and alcohol rehab in the day and will then return home at night up to seven days a week. This is why these drug rehabilitation facilities are also known as Day Treatment. Partial Hospitalization drug treatment programs help clients deal with drug and alcohol addiction problems and mental health problems at the same time in order to make sure that the individual won't relapse the moment drug and alcohol rehabilitation is complete.