Northern District WWTF, Dededo Municipality, Guam - Wastewater Treatment Plant

The Northern District WWTF is a municipal wastewater treatment facility located in Dededo Municipality, Guam, United States. It serves a population of about 71,250, making it a medium-to-large agglomeration for the island. The plant is situated near Tanguisson Beach Road, close to the coast. As a U. S. facility in Guam, the plant operates under the Clean Water Act and is subject to EPA National Pollutant Discharge Elimination System (NPDES) permitting. For a plant of this scale, secondary treatment is typically required, with potential additional nutrient removal if discharging to sensitive waters. The designed capacity is 1.00 million gallons per day, indicating a facility sized for the local population. The plant discharges treated wastewater into the surrounding marine environment, likely into the Philippine Sea. Guam's coastal waters support coral reefs and diverse marine life, making proper treatment essential to protect ecosystem health. The plant's coastal location underscores the importance of effective treatment to minimize impacts on nearshore habitats.

The Northern District WWTF discharges into the Philippine Sea near the coast of Guam. The island's fringing reefs and nearshore waters support diverse marine ecosystems, including coral communities and fish habitats. Effective wastewater treatment is critical to prevent nutrient enrichment and protect water quality in this sensitive coastal environment.