2 plants indexed.
Quincy Domestic STP serves approximately 2,864 residents in Quincy, Washington. The plant treats municipal wastewater and discharges into the local watershed, supporting the Columbia River basin.
Quincy Industrial STP serves approximately 3,738 people in Quincy, Washington. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.