S.C. Code § 50-13-1420
It is unlawful to poison the streams or waters of the State in any manner whatsoever for the purpose of taking fish or to introduce, produce or set up electrical currents or physical shocks, pressures or disturbances therein for the purpose of taking fish. The muddying of streams or ponds or the introduction of any substance which results in making the fish sick, so that they may be caught, is hereby declared to be "poisoning" in the sense of this section. No sawdust, acid or other injurious substance shall be discharged into any of the streams of the State where fish breed or abound. For a violation of this section the person so violating it shall be fined not less than twenty-five dollars nor more than three hundred dollars or be imprisoned for not less than one day nor more than thirty days.
S.C. Code § 50-13-1420