Keystone Substance Abuse Services 199 S. Herlong Ave PO Box 4437 Rock Hill, SC 29732 Normal Hours of Operation and Telephone Numbers Outpatient: Monday – Thursday 8:00 AM – 9:00 PM Friday 8:00 AM – 4:00 PM (803) 324-1800 Inpatient: 24 hours/day (803) 324-0404 Emergency After Hours: (803) 324-0404 Site design and development by Pure Creative.

Saving one life at a time. HOME / ABOUT           about     Keystone was established in 1969 as a private, not-for-profit organization that serves as the Act 301 (1973) substance abuse authority in York County, South Carolina. Keystone offers nationally accredited and licensed services – including education, prevention and treatment (both outpatient and inpatient) -- to meet the needs of individuals, families, and groups in York County and surrounding areas experiencing alcohol and/or drug related problems. Keystone Substance Abuse Services is the county's largest provider of treatment and prevention services. Keystone is nationally accredited by the Commission on Accreditation of Rehabilitation Facilities (CARF) and adheres to the definition of addictive disease as developed by the American Society of Addiction Medicine (ASAM) and the standards for service placement.  Keystone is a charter member of Behavioral Health Services Association of South Carolina.   The South Carolina Department of Health and Environmental Control and the South Carolina Department of Alcohol and Other Drug Abuse Services annually inspect Keystone. OUR MISSION To provide every citizen access to affordable, high quality nationally accredited behavioral health services, encompassing prevention, intervention and treatment, aimed at improving the quality of life of individuals, families and community affected by the problems associated with substance abuse.   OUR VISION Keystone will be the preeminent provider of substance abuse prevention and treatment services in the community.  OUR CORE VALUES Keystone is committed: To decrease the negative effects of alcohol and other drug abuse and dependence. To promote awareness and understanding of the dangers of alcohol and other drug abuse. To treat each client with dignity and respect. To uphold the rights of each client to self-determination and absolute confidentiality. To provide all services in a caring and non-judgmental manner.  Normal Hours of Operation & Telephone Number Inpatient: 24 hours/day, 365 days/year (803) 324-0404 Outpatient: Monday – Thursday 8:00 AM – 9:00 PM Friday 8:00 AM – 4:00 PM  (803) 324-1800 Emergency After Hours Anyone who experiences an after-hour emergency can contact Keystone at (803) 324-0404.  The staff member on duty will assess the situation, and, as appropriate, take action or contact appropriate clinical staff available.                 HOME   |   TREATMENT   |   PREVENTION   |   LEARN   |   COMMUNITY ABOUT   |   DONATE   |   SERVICES   |  CONTACT

The goal of Prevention is to reduce alcohol and other drug problems through coordinated and committed community efforts. READ MORE What to do if you know someone with a substance abuse problem, understanding addiction, and other helpful information. READ MORE We welcome the involvement of past Keystone clients, and rely on your support to continue the success of helping others to experience the joy of recovery. READ MORE