ST AGATHA WWTP - Saint Agatha, Maine Municipal Wastewater Treatment Plant

ST AGATHA WWTP is a municipal wastewater treatment facility located in Saint Agatha, Aroostook County, Maine, United States. The plant serves a small population of 624 residents and operates as part of the local wastewater infrastructure in this rural northern Maine community. The plant provides secondary treatment, which is the standard level required under the US Clean Water Act for municipal facilities. It has a designed capacity of 227.12 megaliters and discharges 189.27 megaliters annually, indicating it operates below its full capacity. The plant is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Maine Department of Environmental Protection. The treated effluent is discharged into a local water body that ultimately drains into the Saint John River basin, which flows northeast into New Brunswick, Canada, and empties into the Bay of Fundy. The plant plays a key role in protecting the water quality of this transboundary watershed and the downstream aquatic ecosystem.

The plant discharges into a tributary of the Saint John River, which flows through northern Maine and New Brunswick before reaching the Bay of Fundy. This watershed supports diverse aquatic life, including Atlantic salmon and other migratory fish species. The secondary treatment process helps reduce organic pollutants and protect downstream water quality in this ecologically sensitive region.