CLEWISTON STP Wastewater Treatment Plant, Clewiston, Florida

CLEWISTON STP is a municipal wastewater treatment facility serving the city of Clewiston in Hendry County, Florida. The plant serves a population of about 9,000 people and is situated near Lake Okeechobee, a key water body in the region. As a US-based facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting. For a plant of this scale, secondary treatment is typically required, with additional nutrient removal standards applicable in Florida due to sensitive downstream ecosystems. The plant's discharge ultimately flows into the Lake Okeechobee watershed, which drains via the Caloosahatchee and St. Lucie rivers to the Gulf of Mexico and Atlantic Ocean. This region supports diverse aquatic life and is ecologically sensitive to nutrient loading.

The plant's receiving waters are part of the Lake Okeechobee basin, a large freshwater lake that drains to both the Gulf of Mexico and the Atlantic Ocean via the Caloosahatchee and St. Lucie rivers. This watershed supports important fisheries and migratory bird populations. Nutrient management is critical to prevent algal blooms and protect downstream estuaries.