The rates charged for services furnished by a nonprofit corporation created for the purpose of providing water supply or sewage disposal, or a combination of those services, are not subject to supervision or regulation by a state board, commission, or agency or department or division of it.
Nonprofit corporations providing water supply or sewage disposal; exemption from rate regulation
S.C. Code Ann. § 33-36-280, under Title 33, Chapter 36.
S.C. Code Ann. § 33-36-280