The Alpharus Health alcohol and drug treatment center in Caseyville is a treatment facility and long-term rehab for men and women, as well as expectant mothers and women with children. It was listed here as Gateway Foundation Caseyville until the organisation took the Alpharus Health name in August 2026.
Gateway Foundation provides residential substance use treatment in Illinois. One of the largest nonprofit addiction treatment providers in the state, Gateway offers evidence-based residential programming for adults, with individual and group counseling, medication-assisted treatment, and aftercare planning.