Waldoboro Treatment Plant | Secondary Wastewater Facility in Waldoboro, Maine

The Waldoboro Treatment Plant is a municipal wastewater facility located in Waldoboro, Lincoln County, Maine, United States. It serves a small population of around 1,612 residents, reflecting its role in a rural coastal community. The plant is situated inland, more than 10 kilometers from the coast, but within 50 kilometers of the Atlantic Ocean. As a secondary treatment plant, it provides biological treatment to remove organic matter and suspended solids, meeting the standard requirements under the U.S. Clean Water Act. The plant has a designed capacity of 757.08 cubic meters per day and currently discharges an average volume of 378.54 cubic meters per day, indicating it operates well below its capacity. This scale of facility is typical for small towns in Maine and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Maine Department of Environmental Protection. The treated effluent is discharged into local streams that drain into the Medomak River, which flows into the Gulf of Maine. The receiving waters support diverse aquatic life, including migratory fish species such as alewives and Atlantic salmon. The plant's operations help protect the ecological health of the Medomak River estuary and the broader coastal ecosystem.

The plant discharges into tributaries of the Medomak River, which flows into the Gulf of Maine, a productive marine ecosystem. The watershed supports critical habitats for diadromous fish and shellfish. The plant's secondary treatment reduces nutrient and pollutant loads, helping to maintain water quality in the river and downstream coastal areas, which are important for fishing and recreation.