Naranjito WWTP - Municipal Wastewater Treatment in Naranjito, Puerto Rico

Naranjito WWTP is a municipal wastewater treatment facility located in the municipality of Naranjito, Puerto Rico, serving a population of about 1,856 residents. The plant is situated in the interior of the island, away from coastal areas, and plays a key role in managing local wastewater for this community. The plant's designed capacity is 1.00 million gallons per day, indicating a small-scale facility. As a U.S. territory, Puerto Rico's wastewater treatment plants are subject to the Clean Water Act and National Pollutant Discharge Elimination System (NPDES) permits, which set effluent limits and monitoring requirements. For small agglomerations like this, secondary treatment is typically required to protect water quality. The treated effluent is discharged into local water bodies that drain into the Atlantic Ocean via the Río Grande de Manatí or nearby rivers. The surrounding watershed supports diverse aquatic life and is important for local ecosystems. Proper treatment helps maintain water quality in streams and downstream coastal areas.

The plant discharges into local streams that are part of the Río Grande de Manatí watershed, which flows northward into the Atlantic Ocean. This region features tropical climate and diverse aquatic habitats. The receiving waters support fish, invertebrates, and vegetation, and are used for recreation and subsistence. Effective treatment is essential to prevent nutrient pollution and protect downstream coastal ecosystems.