Greenville WWTF - Secondary Wastewater Treatment Plant in Greenville, Maine

Greenville WWTF is a municipal wastewater treatment facility located in Greenville, Piscataquis County, Maine. The plant serves a population of approximately 1,977 residents and is situated in the rural Moosehead Lake region. As a secondary treatment plant, it provides biological treatment to remove organic matter and suspended solids from wastewater. The plant has a designed capacity of 643.52 million gallons per year and currently discharges 567.81 million gallons annually. Under the US Clean Water Act, wastewater treatment plants of this scale are required to meet National Pollutant Discharge Elimination System (NPDES) permit standards, which set limits on effluent quality to protect receiving waters. Secondary treatment is the minimum level required for municipal plants in the United States. The treated effluent from Greenville WWTF is discharged into a local water body that ultimately drains into the Moosehead Lake watershed, the largest lake in Maine. This watershed feeds into the Kennebec River, which flows to the Atlantic Ocean. The plant plays a key role in protecting water quality in this ecologically sensitive region, which supports diverse aquatic life and recreational activities.

Greenville WWTF discharges into a receiving water body within the Moosehead Lake watershed, the headwaters of the Kennebec River. The Kennebec River flows southward through Maine and empties into the Atlantic Ocean at Merrymeeting Bay. This watershed supports a variety of fish species, including brook trout and landlocked salmon, and is an important habitat for migratory birds. The plant's secondary treatment helps reduce nutrient loading and protect downstream water quality.