Secondary treatment level wastewater plants

18,348 plants indexed worldwide.

Biological process removes dissolved organic matter after primary treatment.

18,348 plants

DOWNSVILLE STP

Downsville, Louisiana, United States

Downsville STP is a secondary treatment plant serving 647 residents in Downsville, Louisiana. It discharges 109.78 units of treated wastewater daily, with a designed capacity of 264.98 units.

Secondary 647

DOZIER LAGOON

Dozier, Alabama, United States

Dozier Lagoon is a secondary wastewater treatment plant serving 391 people in Dozier, Alabama. It discharges approximately 128.70 units of treated effluent daily, with a designed capacity of 227.12 units.

Secondary 391

Drageide Florvag

Florvåg, Unknown, Norway

Drageide Florvag is a secondary wastewater treatment plant in Florvåg, Norway, serving approximately 950 people. It discharges treated wastewater near the coast of Vestland county.

Secondary 948

DRAIN STP

Drain, Oregon, United States

DRAIN STP is a secondary wastewater treatment plant serving 1,151 people in Drain, Oregon. It discharges 526.17 million gallons per year and has a designed capacity of 1,135.62 million gallons per year.

Secondary 1,151

DRAKE LAGOON

Drake, North Dakota, United States

Drake Lagoon is a secondary wastewater treatment plant serving 275 residents in Drake, North Dakota. It discharges 189.27 cubic meters of treated effluent daily, with a designed capacity of 302.83 cubic meters.

Secondary 275

Drakes Road Outfall

Marystown, Newfoundland and Labrador, Canada

Drakes Road Outfall is a secondary treatment plant serving 296 people in Marystown, Newfoundland and Labrador, Canada. It discharges 133.00 cubic meters of treated wastewater daily.

Secondary 296

DRAKESVILLE WWTP

Davis County, Iowa, United States

Drakesville WWTP is a secondary treatment plant in Davis County, Iowa, serving 172 people. It discharges 64.35 volume units of treated wastewater into local waterways.

Secondary 172

Draperstown

Draperstown, Northern Ireland / Tuaisceart Éireann, United Kingdom

Draperstown wastewater treatment plant in Northern Ireland serves approximately 3,275 people with secondary treatment. It discharges treated effluent into local waterways, supporting the region's water quality under UK regulations.

Secondary 3,275

DRAPIA_S_ANGELO

Brattirò, Calabria, Italy

DRAPIA_S_ANGELO is a secondary wastewater treatment plant in Brattirò, Drapia, Calabria, Italy. It serves approximately 800 people and discharges treated wastewater near the Tyrrhenian Sea coast.

Secondary 800

Drawno

powiat choszczeński, województwo zachodniopomorskie, Poland

Drawno wastewater treatment plant serves the gmina Drawno in zachodniopomorskie, Poland. It provides secondary treatment for a population of 3,472, discharging 495.05 m³/day.

Secondary 3,472

DRAYTON LAGOON

Drayton, North Dakota, United States

Drayton Lagoon is a secondary wastewater treatment plant serving 824 people in Drayton, North Dakota. It discharges treated effluent into local waterways under US EPA NPDES regulations.

Secondary 824

Drayton Wastewater Treatment System and Lagoon

Mapleton, Ontario, Canada

Drayton Wastewater Treatment System and Lagoon serves the community of Mapleton, Ontario, Canada. This secondary treatment plant handles a discharge volume of 480 cubic meters per day.

Secondary 1,069

Drebach

Grießbach, Sachsen, Germany

Drebach wastewater treatment plant in Grießbach, Saxony, Germany, serves a population of 2,187 with secondary treatment. It has a designed capacity of 3,600 m³/day and discharges 328.05 m³/day.

Secondary 2,187

DREFACH_VELI STW

Waungilwen, Cymru / Wales, United Kingdom

DREFACH_VELI STW is a secondary treatment plant in Waungilwen, Carmarthenshire, Wales, serving approximately 2,445 people. It discharges 544.34 m³/day of treated wastewater, with a designed capacity of 2,519 m³/day.

Secondary 2,445

Dresden T Huletts Landing STP

Huletts Landing, New York, United States

Dresden T Huletts Landing STP is a secondary treatment plant serving 250 people in Huletts Landing, New York. It discharges treated wastewater near Lake George, a major recreational water body.

Secondary 250

Dresden WWTP and Sewer System

Dresden, Ohio, United States

Dresden WWTP and Sewer System serves the village of Dresden, Ohio, treating municipal wastewater with secondary treatment. The plant discharges treated effluent into the Muskingum River watershed, supporting local water quality.

Secondary 1,423

DREXEL NORTH WWTP

Drexel, Missouri, United States

Drexel North WWTP is a secondary treatment plant serving 483 people in Drexel, Missouri. It discharges 170.34 thousand gallons per day and has a designed capacity of 189.27 thousand gallons per day.

Secondary 483

DREXEL SOUTH LAGOON

Drexel, Missouri, United States

DREXEL SOUTH LAGOON is a secondary treatment plant serving Drexel, Missouri, USA. It discharges treated wastewater into local waterways, supporting the region's water quality.

Secondary 482

driftpile sewerlagoon

Driftpile, Alberta, Canada

Driftpile Sewerlagoon is a secondary treatment plant serving 190 people in Driftpile, Alberta, Canada. It discharges treated wastewater near the coast, operating under Canadian provincial regulations.

Secondary 190

Drobin

Zakroczym, województwo mazowieckie, Poland

The Drobin wastewater treatment plant in Zakroczym, Poland, serves a small population of 140 with secondary treatment. It operates under the EU Urban Waste Water Treatment Directive.

Secondary 140
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