Secondary treatment level wastewater plants

18,348 plants indexed worldwide.

Biological process removes dissolved organic matter after primary treatment.

18,348 plants

ELLISTON LAFAYETTE STP

Lafayette, Virginia, United States

Elliston Lafayette STP is a secondary treatment plant serving 1,600 people in Lafayette, Virginia. It discharges 302.83 thousand cubic meters of treated wastewater annually.

Secondary 1,600

ELLISVILLE POTW NORTH

Jones County, Mississippi, United States

ELLISVILLE POTW NORTH is a secondary wastewater treatment plant in Jones County, Mississippi, serving approximately 1,225 people. It discharges treated effluent into local waterways under the US Clean Water Act.

Secondary 1,225

ELLISVILLE POTW SOUTH

Jones County, Mississippi, United States

ELLISVILLE POTW SOUTH is a secondary wastewater treatment plant in Jones County, Mississippi, serving 1,400 people. It discharges 794.94 megaliters annually and operates under US EPA NPDES regulations.

Secondary 1,400

ELLISVILLE STATE SCHOOL

Ellisville, Mississippi, United States

ELLISVILLE STATE SCHOOL is a secondary wastewater treatment plant in Ellisville, Mississippi, serving 1,307 people. It discharges 287.69 units of treated wastewater daily, with a designed capacity of 757.08 units.

Secondary 1,307

ELLSINORE WWTP

Ellsinore, Missouri, United States

ELLSINORE WWTP is a secondary treatment plant serving 446 people in Ellsinore, Missouri. It discharges treated wastewater into local waterways, supporting the region's water quality.

Secondary 446

ELLSWORTH WWTP

Hamilton County, Iowa, United States

ELLSWORTH WWTP is a secondary treatment plant serving 526 people in Hamilton County, Iowa, United States. It discharges treated wastewater into local waterways.

Secondary 526

ELM CITY WWTP

Elm City, North Carolina, United States

ELM CITY WWTP is a secondary treatment plant serving 1,281 people in Elm City, North Carolina. It discharges 757.08 thousand gallons per day and has a designed capacity of 1,135.62 thousand gallons per day.

Secondary 1,281

ELM CREEK WWTP

Buffalo County, Nebraska, United States

Elm Creek WWTP is a secondary treatment plant serving 894 people in Buffalo County, Nebraska. It discharges 416.40 units of treated wastewater daily and has a designed capacity of 567.81 units.

Secondary 894

Elm Mott WWTP

McLennan County, Texas, United States

Elm Mott WWTP is a secondary treatment plant in McLennan County, Texas, serving 1,200 people. It discharges 302.83 megaliters per year and has a design capacity of 757.08 megaliters per year.

Secondary 1,200

ELMA STP

Elma, Washington, United States

ELMA STP is a secondary wastewater treatment plant serving 3,540 people in Elma, Washington. It discharges 791.15 million gallons per year into the local watershed.

Secondary 3,540

Elma T SD4 STP

Elma Center, New York, United States

Elma T SD4 STP is a secondary treatment plant serving 190 people in Elma Center, New York. It discharges 53.00 volume units daily with a designed capacity of 75.71 units.

Secondary 190

Elma T SD5 WWTP

Erie County, New York, United States

Elma T SD5 WWTP is a secondary treatment plant in Erie County, New York, serving 350 people. It discharges 162.77 million gallons per year and operates under US Clean Water Act regulations.

Secondary 350

Elma T SD7 STP and Onsite Systems

Elma Center, New York, United States

Elma T SD7 STP and Onsite Systems is a secondary treatment plant serving 180 people in Elma Center, New York. It discharges 37.85 m³/day of treated wastewater and operates under the US Clean Water Act.

Secondary 180

ELMA WWTP

Elma, Iowa, United States

ELMA WWTP is a secondary treatment plant serving 653 residents in Elma, Iowa. It discharges 227.13 thousand cubic meters per year and operates under US EPA NPDES regulations.

Secondary 653

ELMDALE WWTP

Elmdale, Kansas, United States

ELMDALE WWTP is a secondary treatment plant serving 50 people in Elmdale, Kansas. It discharges 18.93 megaliters of treated wastewater annually, operating under US Clean Water Act regulations.

Secondary 50

Elmech Ujscie

Ujście, województwo wielkopolskie, Poland

Elmech Ujscie is a secondary wastewater treatment plant in Ujście, Poland, serving approximately 6,854 people. It discharges treated wastewater into local waterways, supporting environmental protection in the Wielkopolska region.

Secondary 6,854

ELMO

Elmo, Utah, United States

ELMO wastewater treatment plant serves Elmo, Utah, treating municipal wastewater for a population of 418. The facility operates with secondary treatment and discharges 151.42 megaliters annually.

Secondary 418

ELMO WWTP

Elmo, Missouri, United States

ELMO WWTP is a secondary treatment plant serving 166 people in Elmo, Missouri. It discharges 34.07 million gallons per year and has a designed capacity of 87.06 million gallons per year.

Secondary 166

Elmore

Unknown, Victoria, Australia

Elmore wastewater treatment plant in Victoria, Australia, serves a small population of 978 with secondary treatment. It discharges approximately 253 megalitres annually into the local catchment.

Secondary 978

ELMORE CITY WWT

Elmore City, Oklahoma, United States

Elmore City WWT is a secondary treatment plant serving 760 residents in Elmore City, Oklahoma. It discharges 302.83 thousand cubic meters annually and operates under the US Clean Water Act framework.

Secondary 760
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