S.C. Code Ann. § 63-7-390

A person required or permitted to report pursuant to Section 63-7-310 or who participates in an investigation or judicial proceedings resulting from the report, acting in good faith, is immune from civil and criminal liability which might otherwise result by reason of these actions. In all such civil or criminal proceedings, good faith is rebuttably presumed. Immunity under this section extends to full disclosure by the person of facts which gave the person reason to believe that the child's physical or mental health or welfare had been or might be adversely affected by abuse or neglect.