Ocean Isle Beach WWTP - Coastal Secondary Treatment Plant in North Carolina

Ocean Isle Beach WWTP is a municipal wastewater treatment facility located at 47 West 3rd Street in Ocean Isle Beach, Brunswick County, North Carolina. The plant serves a population of approximately 25,550 residents, reflecting the community's scale as a coastal town. It operates under the regulatory framework of the US Clean Water Act, which governs wastewater discharges through National Pollutant Discharge Elimination System (NPDES) permits issued by the state of North Carolina. The plant provides secondary treatment, a standard level for municipal wastewater that removes biodegradable organic matter and suspended solids. With a designed capacity of 6,056.64 megaliters per year, the facility treats an average annual discharge volume of 757.08 megaliters, indicating operational headroom. As a coastal plant within 10 kilometers of the Atlantic Ocean, its discharge likely flows into the Intracoastal Waterway or directly to the ocean, subject to stringent permit limits to protect marine ecosystems. The treated effluent from Ocean Isle Beach WWTP ultimately reaches the Atlantic Ocean, a major water body that supports diverse marine life and recreational activities. The plant's location in a coastal barrier island setting underscores the importance of effective wastewater treatment to prevent nutrient pollution and safeguard water quality in sensitive estuarine and nearshore environments.

The plant discharges treated wastewater into the Atlantic Ocean via the Intracoastal Waterway or local tidal creeks, which are part of the larger coastal watershed of southeastern North Carolina. This region supports ecologically significant habitats, including salt marshes and sea turtle nesting beaches, making nutrient and pathogen control critical for maintaining water quality and biodiversity.