18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
Helmer Sewage Treatment System serves 32 people in Helmer, Idaho, with secondary treatment. The plant discharges 15.14 megaliters annually and has a designed capacity of 53.00 megaliters.
Helmstadt wastewater treatment plant serves Holzkirchhausen, Germany, with secondary treatment for a population of 2,507. The plant has a designed capacity of 5,500 m³/day and discharges 646.06 m³/day.
Hemberg wastewater treatment plant serves the Neckertal area in St. Gallen, Switzerland. It provides secondary treatment for a population of 678 and has a designed capacity of 1,133 m³/day.
Hemingbrough STW is a secondary treatment plant in North Yorkshire, England, serving approximately 2,133 people. It discharges treated wastewater into the local water environment, contributing to the Ouse and Humber catchment.
Hemingford WWTP is a secondary treatment plant serving 1,214 people in Box Butte County, Nebraska. It discharges 340.69 million gallons per year and has a designed capacity of 302.83 million gallons.
Hemingway WWTP is a secondary treatment plant serving about 2,400 residents in Hemingway, South Carolina. It discharges treated wastewater into local waterways within the Pee Dee River basin.
HEMPNALL STW is a secondary treatment plant serving 2,349 people in South Norfolk, England. It discharges treated wastewater into local watercourses, contributing to the region's water quality management.
Henderson County Westover wastewater treatment plant serves 605 people in Henderson County, Tennessee, with secondary treatment and a designed capacity of 37.85 units.
Henderson Lagoon East is a secondary treatment plant in Jacks Creek, Tennessee, serving about 2,000 people. It discharges treated wastewater into local waterways, supporting the region's water quality.
HENDERSON STL is a secondary wastewater treatment plant serving Henderson, Iowa, USA. It processes approximately 75.71 m³/day of wastewater with a designed capacity of 113.56 m³/day.
Henderson WWTP is a secondary treatment facility in York County, Nebraska, serving a population of 1,123. It discharges treated wastewater into local waterways, supporting the region's water quality.
HENEFER wastewater treatment plant in Summit County, Utah, serves 766 people with secondary treatment. It discharges 378.54 cubic meters per day and has a designed capacity of 567.81 cubic meters per day.
Henniker WWTF is a secondary treatment plant in Henniker, New Hampshire, serving approximately 2,868 people. It discharges 810.08 thousand gallons per day into the Contoocook River watershed.
Henning Lagoon is a secondary wastewater treatment plant serving Henning, Tennessee. It discharges treated wastewater into local waterways, supporting the region's environmental health.
Henning STP is a secondary treatment plant serving 819 people in Henning Township, Minnesota. It discharges 503.46 million gallons per year and has a designed capacity of 654.87 million gallons per year.
HENNUYERES Champs de L Epine is a closed secondary treatment plant in Braine-le-Comte, Belgium. It served 147 people with a designed capacity of 250 m³/day.
Henry WWTP is a secondary treatment plant serving 162 people in Henry, Nebraska. The facility discharges treated wastewater into local waterways, supporting the North Platte River basin.
Henryville STP is a secondary wastewater treatment plant in Clark County, Indiana, serving approximately 1,545 people. It discharges treated effluent into local waterways under US EPA NPDES regulations.
Hensall Wastewater Lagoon in Bluewater, Ontario, Canada, provides secondary treatment for a small population of 949. The plant discharges treated wastewater into the local watershed, supporting the region's water quality.
HENSIES POMMEROEUL is a secondary wastewater treatment plant in Hensies, Hainaut, Belgium, serving a population of 1,171. It discharges 209.32 m³/day of treated effluent into local waterways.