Monroe Co NW Quadrant WWTP - Hilton, New York Wastewater Treatment Plant

Monroe Co NW Quadrant WWTP is a municipal wastewater treatment facility serving the Village of Hilton and surrounding areas in Monroe County, New York. The plant serves a population of approximately 95,500, classifying it as a large agglomeration under US regulatory frameworks. It is situated near the southern shore of Lake Ontario, one of the Great Lakes. As a US-based plant of this scale, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the New York State Department of Environmental Conservation (DEC). These permits set effluent limits to protect water quality. Plants serving populations over 10,000 typically require at least secondary treatment, and those discharging to sensitive waters like the Great Lakes may need advanced treatment to control nutrients such as phosphorus. The plant's treated effluent ultimately discharges into the Lake Ontario basin, a critical freshwater resource that supports diverse aquatic life and provides drinking water for millions. The watershed includes the Genesee River and other tributaries that drain into the lake. Protecting this ecosystem is vital for maintaining water quality in the Great Lakes system, which is a major ecological and economic asset for both the US and Canada.

The plant discharges into the Lake Ontario watershed, part of the Great Lakes system, which is the largest group of freshwater lakes on Earth by total area. Lake Ontario supports a diverse ecosystem including native fish species such as lake trout and salmon, and serves as a critical migratory corridor for birds. The lake's water quality is sensitive to nutrient pollution, which can cause algal blooms and hypoxia. The plant's location within 50 km of the coast means its discharge can directly impact nearshore habitats and recreational waters.