W. Va. Code § 24-2-1r
The Legislature finds that it is in the public interest of the citizens of West Virginia for public water utilities to follow the National Fire Protection Association's Recommended Practice for Fire Flow Testing and Marking of Hydrants (Standard 291) and the American Water Works Association's Fire Hydrants, Installation, Field Testing and Maintenance (Manual M17) to ensure that all installed fire hydrants are working properly and to follow the provisions of 64 WV CSR 77, Public Water Systems Design Standards, to ensure proper design and placement of water systems generally, including hydrants. Therefore, those standards are hereby adopted, and the Public Service Commission may promulgate rules in accordance with the provisions of § 29A-1-3et seq. of this code on the inspection, flushing, flow testing, and marking of fire hydrants owned by public water utilities as set forth in those standards. In instances where the Public Service Commission determines that any provision of Standard 291, Manual M17, or 64 WV CSR 77 are in conflict or where, to promote the proper functioning of fire hydrants and the operation of the utilities, the adoption of either Standard 291, Manual M17, or 64 WV CSR 77 in preference to another is in the public interest, the Public Service Commission may do so.
All public water utilities shall comply with these standards and any rules the commission may promulgate. A public water utility may use its cash working capital reserve for inspection, testing, maintenance, or replacement of fire hydrants to comply with the standards and rules adopted in this section.
W. Va. Code § 24-2-1r