Environmental Rules in Wilmington, NC (2026)
3 verified environmental rules for Wilmington, North Carolina, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Wilmington bans dumping anything but stormwater into its drainage system. City Code § 12-22 makes it unlawful to discharge liquids, solids or gas into a stormwater conveyance or the waters of the state in a way likely to reach them, carves out a short list of everyday exceptions, and makes any violation a misdemeanor.
Wilmington Stormwater Discharge Prohibition
Heavy RestrictionsWilmington City Code § 12-22
(a)No person shall cause or allow the discharge, emission, disposal, pouring, or pumping of any liquid, solid, gas, or other substance, other than stormwater directly or indirectly to any stormwater conveyance, the waters of the state, or upon the land or exposed to wind and rain, in manner and amount that the substance is likely to reach a stormwater conveyance or the waters of the state...(b)...
Flood Zones
Wilmington bars anyone from starting development in a special flood hazard area without a floodplain development permit from the floodplain administrator. Sec. 18-661 layers on outright prohibitions inside those zones: no new solid waste, hazardous waste, salvage yard or chemical storage facilities, and no manufactured home outside an existing manufactured home park or subdivision.
Wilmington Floodplain Development Permit Rule
Significant RestrictionsWilmington City Code § 18-646(a); § 18-661(a)(1)-(2)
(a)Except as provided in subsection 18-661(b), no person may start any floodplain development activities within areas of special flood hazard without having first obtained a floodplain development permit from the floodplain administrator in accordance with this article. ... New solid waste disposal facilities, hazardous waste management facilities, salvage yards, and chemical storage facilities...
Flood Elevation Requirements
Wilmington requires the lowest floor of any new or substantially improved structure in a special flood hazard area, residential or nonresidential, to sit at least two feet above the base flood elevation, the freeboard that sets the citywide regulatory flood protection elevation. Sec. 18-660(b) lets nonresidential buildings in A zones floodproof instead of elevate, with engineer certification.
Wilmington Flood Elevation Freeboard Rule
Some RestrictionsWilmington City Code § 18-660(a)-(b)
(a)Residential construction. All new construction or substantial improvement of any residential structure (including manufactured homes) shall have the lowest floor, including basement, elevated to at least two (2) feet above base flood elevation. Should solid foundation perimeter walls be used to elevate a structure, openings sufficient to facilitate the unimpeded movement of floodwaters shall...
Looking for New Hanover County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Wilmington city rules.
Environmental Rules in New Hanover County →