Guayanilla WWTP - Municipal Wastewater Treatment in Guayanilla, Puerto Rico

Guayanilla WWTP is a municipal wastewater treatment facility serving the community of Guayanilla, Puerto Rico, a municipality on the southern coast of the island. The plant serves a population of approximately 6,418 residents, placing it in the small-to-medium agglomeration category. As a facility in a U.S. Plants of this scale in Puerto Rico typically employ secondary treatment to meet federal standards. The designed capacity of 1.00 million gallons per day suggests the plant is sized to handle the local wastewater load. The plant is assumed to be active given its listing. The plant discharges treated wastewater into local waterways that ultimately drain into the Caribbean Sea. The southern coast of Puerto Rico features ecologically sensitive nearshore environments, including coral reefs and seagrass beds that benefit from proper wastewater treatment. The plant's proximity to the coast (within 50 km) underscores the importance of effective treatment to protect marine water quality and coastal ecosystems.

Guayanilla WWTP discharges into local streams that flow to the Caribbean Sea near the southern coast of Puerto Rico. This coastal region supports diverse marine life, including coral reefs and mangrove forests, which are sensitive to nutrient pollution and pathogens. Proper wastewater treatment is critical to maintaining water quality in the nearshore environment and protecting the ecological health of the Caribbean Sea.