18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
HADDENHAM STW is a secondary wastewater treatment plant in Haddenham, East Cambridgeshire, England, serving approximately 2,994 people. It discharges 666.57 m³/day of treated effluent and has a designed capacity of 3,052 m³/day.
Hadley T STP and On Site Systems is a secondary treatment plant serving 300 people in Town of Hadley, New York. It discharges treated wastewater into local waterways within the Hudson River basin.
Hadlow STW is a secondary wastewater treatment plant in Tonbridge and Malling, England, serving approximately 3,400 people. It discharges treated effluent into local watercourses within the Kent catchment.
Hagardsviken Garnes is a secondary treatment plant in Bergen, Norway, serving 342 people. It discharges 148.32 m³/day and has a designed capacity of 700 m³/day, located within 10 km of the coast.
Hagelstadt wastewater treatment plant in Gailsbach, Bavaria, Germany, serves 1,742 people with secondary treatment. The plant is now closed, with a designed capacity of 3,000 m³/day and a discharge volume of 440.86 m³/day.
Hagerman Lagoon is a secondary wastewater treatment plant serving 872 residents in Hagerman, Idaho. The facility discharges treated water into the local watershed, supporting the region's environmental health.
Hagerman Stab Pond is a secondary wastewater treatment facility serving 973 residents in Hagerman, New Mexico. The plant discharges 340.69 million gallons annually and has a designed capacity of 454.25 million gallons.
Haggerston Castle Caravan Park STW is a secondary treatment plant in Northumberland, England, serving a small population of 52. It discharges treated wastewater near the Northumberland coast.
Hague Lagoon is a secondary treatment plant serving 71 people in Hague, North Dakota. It discharges 37.85 m³/day of treated wastewater, with a designed capacity of 75.71 m³/day.
Hague T STP and On Site Systems serves the Town of Hague, New York, treating wastewater for 531 residents. The secondary treatment plant discharges 132.49 million gallons per year near Lake George.
Hagwilget Lagoon is a secondary treatment plant serving 245 people in Area B, British Columbia.
Hahei wastewater treatment plant serves the coastal community of Hahei in Waikato, New Zealand. It provides secondary treatment for a population of approximately 1,984 and discharges treated effluent near the Coromandel Peninsula coast.
Haidmühle wastewater treatment plant in Bavaria, Germany serves 2,315 people with secondary treatment. It has a designed capacity of 4,000 m³/day and discharges 990 m³/day of treated effluent.
HAIGLER WWTP is a secondary treatment plant serving 225 people in Dundy County, Nebraska. It discharges 105.99 volume units and operates under US Clean Water Act regulations.
HAILLOT wastewater treatment plant in Haillot, Namur, Belgium, serves a population of 725 with secondary treatment. It discharges approximately 129.59 m³/day of treated wastewater.
Hainspitz wastewater treatment plant in Aubitz, Thüringen, Germany, serves a population of 1,550 with secondary treatment. The plant is now closed, having had a designed capacity of 2,400 m³/day.
Haisla WWTP is a secondary treatment plant in Kitamaat, British Columbia, serving 504 people. It discharges 255 m³/day of treated wastewater near the coast.
Hakonshella wastewater treatment plant in Bergen, Norway, serves 515 people with secondary treatment. It discharges 223.35 cubic meters of treated wastewater daily, operating near the coast in Vestland county.
Halcombe wastewater treatment plant serves 155 people in Manawatū District, New Zealand, providing secondary treatment. The plant discharges 101.00 megaliters per year into the local environment.
Halden wastewater treatment plant in Bischofszell, Thurgau, Switzerland, serves a population of 912 with secondary treatment. The plant has a designed capacity of 1000 m³/day and discharges 413.98 m³/day.