West Virginia Code Chapter 16. Public Health § 16-13D-2. Definitions

(a) The term “authority” means any regional water authority, regional wastewater authority, regional stormwater authority, or any combination thereof organized pursuant to the provisions of this article;

(b) The term “public agency” means any municipality, county, public service district, or other political subdivision of this state; and

(c) The term “stormwater,” “stormwater system,” or “stormwater works” means a stormwater system in its entirety or any integral part thereof used to collect and dispose of stormwater and an associated stormwater management program. It includes all facilities, structures, and natural water courses used for collecting and conducting stormwater to, through, and from drainage areas to the points of final outlet, including, but not limited to, any and all of the following: inlets, conduits, outlets, channels, ponds, drainage easements, water quality facilities, catch basins, ditches, streams, gulches, flumes, culverts, syphons, retention or detention basins, dams, floodwalls, levies, pipes, flood control systems and pumping stations, and associated stormwater management program. The term “stormwater system” and “stormwater works” shall not include highways, road and drainage easements, and/or stormwater facilities constructed, owned and/or operated by the West Virginia Division of Highways.