GSWSA Myrtle Beach WWTP - Island Green, South Carolina Wastewater Treatment

GSWSA Myrtle Beach WWTP is a major wastewater treatment facility located in Island Green, South Carolina, within Horry County. Serving a population of over 125,000, it is a key component of the region's water infrastructure, managed by the Grand Strand Water and Sewer Authority. The plant operates under the US Clean Water Act, which requires secondary treatment for municipal facilities of this scale. The designed capacity of 1.00 million gallons per day indicates a substantial treatment capability, consistent with the population served. The plant discharges treated effluent into the Atlantic coastal watershed, ultimately reaching the Atlantic Ocean. Its operations help protect the sensitive coastal ecosystems and downstream water quality in the Grand Strand area, a region known for tourism and aquatic habitats.

The plant's discharge enters the Waccamaw River basin, which flows into the Atlantic Ocean near Myrtle Beach. This coastal watershed supports diverse aquatic life, including estuarine habitats and migratory fish species. The facility's treatment helps mitigate nutrient loading and protect downstream water quality in a region heavily reliant on tourism and coastal resources.