South carolina constitution
Article VIII: local government
Section 16

Any county or consolidated political subdivision created under this Constitution may, upon a majority vote of the electors voting on the question in such county or consolidated political subdivision, acquire by initial construction or purchase and may operate water, sewer, transportation or other public utility systems and plants other than gas and electric; provided this provision shall not prohibit the continued operation of gas and electric, water, sewer or other such utility systems of a municipality which becomes a part of a consolidated political subdivision.