Rock Hill’s detox and addiction treatment system is built around a single primary authority: Keystone Substance Abuse Services, the Act 301 county alcohol and drug abuse authority for York County.
Established in 1969 and headquartered on South Herlong Avenue, Keystone is licensed by both the South Carolina Department of Health and Environmental Control (DHEC) and accredited by the Commission on Accreditation of Rehabilitation Facilities (CARF). The facility operates 10 medically supervised withdrawal management beds and 4 residential beds, making it the only publicly funded detox provider in York County.
At the state level, the Department of Alcohol and Other Drug Abuse Services (DAODAS) oversees all licensed SUD treatment facilities across South Carolina’s 46 counties and funds Keystone through its county authority network.
York County is on a troubling trajectory, making understanding local resources especially important. The York County Coroner reported 118 overdose deaths in 2023, up from 111 in 2022, and fentanyl was a primary driver in the majority of those deaths.
York County was also listed among the 15 South Carolina counties where overdose deaths increased in 2023, even as the state as a whole saw its first overall decline in over a decade.
It’s important to keep in mind that fentanyl contamination of the local drug supply means that people using stimulants, benzodiazepines or other substances face opioid overdose risk even when opioids are not their primary substance.
South Carolina’s opioid settlement fund (SCORF) has been distributing grant funding to counties since 2023 for evidence-based abatement strategies, and York County is eligible to apply for these funds, which can support expanded detox capacity, MAT access and harm reduction programming.
For people without insurance or with limited income, choosing a detox center is a question that often starts at Keystone, which accepts Medicaid, Medicare and sliding-scale payments.
Private facilities serving Rock Hill often pull from the broader Charlotte, NC, metro market, given the city’s proximity to the state line, expanding the realistic options for residents with private insurance or the ability to travel.
