18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
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.
HALE WWTP is a secondary treatment plant in Hale, Missouri, serving a small population of 446. It discharges treated wastewater into local waterways, supporting the region's water quality.
Halfway STP is a secondary treatment plant serving the small community of Halfway, Oregon. It discharges treated wastewater into the local watershed, supporting downstream water quality in the Pine Creek drainage.
Halfway WWTP is a secondary treatment plant serving 173 people in Halfway, Missouri. It discharges 56.78 units of treated wastewater daily, with a designed capacity of 113.56 units.
Halhjem Auredalen is a secondary wastewater treatment plant in Osøyro, Norway, serving 1,304 people with a designed capacity of 1,500 m³/day.
HALIFAX BORO STP is a secondary wastewater treatment plant in Halifax, Pennsylvania, serving a population of 1,000. It discharges treated effluent into local waterways under US EPA NPDES regulations.
Halifax S T P is a secondary treatment plant serving 1,400 people in Halifax, Virginia. It discharges 189.27 megaliters of treated wastewater annually, operating under the US Clean Water Act.
HALK wastewater treatment plant in Medsted, Denmark serves 410 people with secondary treatment. It discharges 338.92 m³/day and is located within 10 km of the coast.
Hall Creek WWTP and Collection Sys is a secondary treatment plant serving 2,400 people in Meadowview, Virginia. It discharges 757.08 megaliters of treated wastewater annually under US EPA NPDES regulations.
Hallam WWTP is a secondary treatment facility serving 275 people in Hallam, Nebraska. It discharges 113.56 thousand cubic meters per year into local waterways.
Halliday Lagoon is a secondary treatment plant serving 188 people in Halliday, North Dakota. It discharges 75.71 cubic meters of treated wastewater daily.