S.C. Code Ann. § 6-21-450: Payment of expenses of operation or maintenance from other funds.

Nothing in this chapter shall be construed to prohibit the borrower from appropriating and using any part of its available income or revenues derived from any source other than from the operation of such system, project or combined system in paying any immediate expenses of operation or maintenance of any such system, project or combined system. But nothing in this chapter shall be construed to require the borrower to do so.