S.C. Code Regs. 7-200.4. Person Under 21—Violation to Allow Possession and Consumption of Alcoholic Liquors, or Possession and Consumption of Beer or Wine, on Premises

To permit or knowingly allow a person under twenty-one year of age to purchase or possess or consume alcoholic liquors, beer or wine in or on a licensed place of business which holds a license or permit issued by the Department is prohibited and constitutes a violation against the license or permit. Such violation shall be sufficient cause to suspend or revoke the license or permit by the Department.