26,154 plants indexed worldwide.
Plants where treatment level information is not publicly available.
COLUMBIA POTW SOUTH serves Columbia, Mississippi, treating wastewater for approximately 6,345 residents. The plant discharges into local waterways under U.S. EPA NPDES permitting.
Columbia Regional WWTP serves approximately 135,000 people in Columbia, Missouri. The plant operates under the US Clean Water Act, which mandates secondary treatment for municipal wastewater facilities.
COLUMBIA STP serves approximately 3,944 people in Columbia, Kentucky. The plant discharges treated wastewater into local waterways, supporting the region's water quality management.
Columbia WWTP serves Maury County, Tennessee, treating wastewater for approximately 35,000 residents. The plant operates under U.S. EPA and Tennessee Department of Environment and Conservation regulations.
Columbiana Co Elkton Regional WWTP serves Lisbon, Ohio, treating wastewater for approximately 8,100 residents. The plant operates under the US Clean Water Act framework, with NPDES permitting through the Ohio EPA.
Columbiana Co Gilford Lake WWTP serves New Garden, Ohio, treating wastewater for approximately 4,068 residents. The plant operates under U.S. EPA and Ohio EPA regulations for inland discharge.
COLUMBIANA WWTP is a municipal wastewater treatment plant serving Columbiana, Alabama. It operates under the US Clean Water Act framework for small communities.
Columbiana WWTP and Sewer System serves Lisbon, Ohio, treating wastewater for approximately 7,800 residents. The plant discharges into local waterways within the Ohio River basin.
Columbus Grove WWTP and Sewer System serves approximately 2,200 residents in Columbus Grove, Ohio. The plant is part of the municipal wastewater infrastructure for Putnam County.
Columbus Jackson Pike WWTP and Sewers serves approximately 487,474 people in Columbus, Ohio. The plant is part of the city's municipal wastewater infrastructure, discharging treated effluent into the Scioto River watershed.
COLUMBUS POTW serves 25,514 people in Columbus, Mississippi, as part of the city's municipal wastewater infrastructure. The plant discharges into local waterways within the Tombigbee River basin.
Columbus Southerly WWTP and Sewers serves approximately 553,000 people in Columbus, Ohio. The plant discharges treated wastewater into the Scioto River system, which flows to the Ohio River and ultimately the Mississippi River.
COLUMBUS WWTP serves Cherokee County, Kansas, treating wastewater for approximately 3,444 residents. The plant operates under U.S. Clean Water Act regulations, ensuring compliance with state-issued NPDES permits.
Columbus WWTP serves 41,500 people in Columbus, Indiana, as part of the city's municipal wastewater infrastructure. The plant operates under the US Clean Water Act framework.
COLUMBUS WWTP serves approximately 20,971 people in Columbus, Nebraska. The plant discharges treated wastewater into the Platte River basin, supporting local water quality and downstream ecosystems.
COLUMBUS WWTP serves Columbus, Wisconsin, treating municipal wastewater for approximately 4,684 residents. The plant discharges into local waterways under U.S. Clean Water Act regulations.
COLUNGA wastewater treatment plant serves 10,500 people in Colunga, Asturias, Spain. Located within 50 km of the coast, it discharges into the local watershed under EU regulatory oversight.
Colusa WWTP serves approximately 5,670 people in Colusa County, California. The plant discharges treated wastewater into local waterways under the US Clean Water Act framework.
COLVILLE SEW LAGOON is a municipal wastewater treatment plant serving Colville, Washington. It treats wastewater for approximately 5,116 residents and discharges into the local watershed.
Colwyn Bay & Llandudno STW is a wastewater treatment plant serving approximately 80,000 people in Penrhyn-Side, Wales. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this size.