S.C. Code § 50-13-1410
It shall be unlawful for any person to throw, run, drain or deposit any dyestuffs, coal tar, oil, sawdust, poison or other deleterious substance in any of the waters, either fresh or salt, which are frequented by game fish within the territorial jurisdiction of this State in quantities sufficient to injure, stupefy or kill any fish or shellfish or be destructive to their spawn which may inhabit such waters, and the master or captain in charge of any boat, ship or vessel shall be responsible for the discharge of any of such substances from his vessel. Any person convicted of violating this section shall be fined not less than three hundred dollars nor more than one thousand dollars or imprisoned not less than three months nor more than one year, or both fined and imprisoned in the discretion of the court. The department shall diligently enforce this section.
S.C. Code § 50-13-1410