Anastasia Island WWTP - Saint Augustine Beach, Florida Wastewater Treatment Plant

Anastasia Island WWTP is a municipal wastewater treatment facility located at 853 West 16th Street in Saint Augustine Beach, Florida, within Saint Johns County. The plant serves a population of approximately 18,500 residents, placing it in the medium-agglomeration category for U.S. wastewater systems. As a U.S. facility, the plant operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The designed capacity is 1.00 million gallons per day, indicating a facility scaled to handle the local community's wastewater needs. The plant's discharge ultimately reaches the Atlantic Ocean via local waterways, contributing to the coastal ecosystem of northeastern Florida. The region supports diverse marine life, including estuarine habitats that are important for fish and bird species. Proper treatment is essential to prevent nutrient pollution and protect the sensitive coastal environment.

The plant's treated effluent flows into the Atlantic Ocean near Saint Augustine Beach, part of Florida's Intracoastal Waterway system. This coastal area supports seagrass beds, oyster reefs, and migratory bird populations. Nutrient loading from wastewater can contribute to algal blooms and hypoxia, making effective treatment critical for maintaining water quality in the downstream marine environment.