S.C. Code Ann. § 4-19-70: Redemption of bonds.

Any bond issued pursuant to this chapter may be issued with a provision permitting its redemption prior to its stated maturity, at par and accrued interest, plus such redemption premium as may be prescribed by the governing body, but no bond is redeemable prior to its stated maturity unless it contains a statement to that effect. In the proceedings authorizing the issuance of such bonds, provision must be made specifying the manner of call and the notice thereof that must be given as to bonds redeemable prior to their stated maturities.