S.C. Code § 5-31-810
Any city or town in this State may incur bonded indebtedness and own and possess property to any amount within the discretion of the municipal authorities of such city or town for the purposes of purchase, establishment and maintenance of sewerage systems; provided, that the question of such purchase, establishment or indebtedness shall be submitted to an election and no such purchase, or establishment or indebtedness shall be made except upon the vote in favor thereof of a majority of the electors of such city or town who are qualified to vote on the bonded indebtedness of such city or town; and provided, further, that the question of incurring such indebtedness be submitted with favorable results to the freeholders of such municipalities by petition.
S.C. Code § 5-31-810