Cross City STP 1 and 2 - Advanced Wastewater Treatment in Cross City, Florida

Cross City STP 1 and 2 is a municipal wastewater treatment facility located in Cross City, Florida, within Dixie County. The plant serves a population of about 1,975 residents, reflecting its role in managing wastewater for this small community in the northern part of the state. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,514.16 cubic meters per day and an actual discharge volume of 946.35 cubic meters per day, the facility operates below its full capacity. As a U.S. plant, it operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Florida Department of Environmental Protection to regulate discharges. The treated effluent is discharged into local waterways that ultimately drain to the Gulf of Mexico. The plant's location more than 10 kilometers inland but within 50 kilometers of the coast means its discharge contributes to the health of coastal ecosystems, including estuaries and marine habitats that support diverse aquatic life.

The plant discharges into receiving waters that flow through the Suwannee River basin, which empties into the Gulf of Mexico near the Big Bend region of Florida. This area supports ecologically sensitive seagrass beds and estuarine habitats that are critical for fish and shellfish. Advanced treatment helps reduce nutrient loading, protecting downstream water quality and marine ecosystems.