W. Va. Code § 13-2E-7

Refunding bonds and all acts required to be authorized hereunder shall be authorized in the manner in which the bonds to be refunded were authorized and issued: Provided, That refunding bonds of a system resulting from the severance of a combined municipal waterworks and sewerage system shall to the extent applicable be authorized and issued under the terms and provisions of law, including, but not limited to, interest rates and net interest costs, under which revenue bonds of such resulting system would be authorized and issued.