Overview
Calais WWTF serves 3,124 residents in Calais, Maine, USA. The plant operates under the US Clean Water Act with a designed capacity of 1.00 million gallons per day.
Calais WWTF is a municipal wastewater treatment facility located in Calais, Washington County, Maine, United States. It serves a population of approximately 3,124 residents, making it a small-scale plant typical of rural communities in the region. The facility is situated near the St. Croix River, which forms the border between the US and Canada. As a US-based plant, Calais WWTF operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting. The designed capacity of 1.00 million gallons per day suggests the plant is sized for the local population. Small plants in Maine commonly employ secondary treatment or lagoon systems to meet state and federal standards. The plant's treated effluent likely discharges into the St. Croix River, which flows into Passamaquoddy Bay and ultimately the Bay of Fundy. This watershed supports diverse aquatic life, including migratory fish species such as Atlantic salmon and alewife. The plant plays a key role in protecting downstream water quality in this ecologically sensitive international waterway.
Environmental context
Calais WWTF discharges into the St. Croix River, which flows into Passamaquoddy Bay and then the Bay of Fundy. This watershed supports diverse aquatic life, including migratory fish species such as Atlantic salmon and alewife. The plant's operations help maintain water quality in this ecologically sensitive international waterway.
Frequently asked questions
Calais WWTF is located in Calais, Washington County, Maine, United States, near the St. Croix River which forms the border with Canada.
Calais WWTF serves approximately 3,124 residents in the Calais area.
The plant likely discharges treated effluent into the St. Croix River, which flows into Passamaquoddy Bay and the Bay of Fundy.
As a US plant, Calais WWTF operates under the Clean Water Act and is regulated via an NPDES permit issued by the Maine Department of Environmental Protection.
Small plants in Maine often use secondary treatment or lagoon systems to meet state and federal standards for BOD and TSS removal.
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