GUILFORD SANGERVILLE WWTF - Secondary Wastewater Treatment in Guilford, Maine

GUILFORD SANGERVILLE WWTF is a municipal wastewater treatment facility located in Guilford, Piscataquis County, Maine, United States. It serves a population of approximately 2,988 residents and is operated by the Gilford-Sangerville Sanitary District. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for most municipal facilities. The plant has a designed capacity of 3,520.42 thousand gallons per day and currently processes an average daily flow of 984.21 thousand gallons per day. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids before discharge. The plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into the Piscataquis River watershed, which flows into the Penobscot River and eventually reaches Penobscot Bay in the Atlantic Ocean. The plant plays a key role in protecting the local aquatic ecosystem and downstream water quality in this rural region of Maine.

The plant discharges into the Piscataquis River, a tributary of the Penobscot River, which flows into Penobscot Bay and the Gulf of Maine. The watershed supports diverse aquatic life, including Atlantic salmon and brook trout. Secondary treatment reduces organic pollutants and suspended solids, helping maintain water quality in this ecologically sensitive river system.