18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
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.
Halls Creek wastewater treatment plant in Western Australia serves 1,470 people with secondary treatment. It discharges treated effluent into the Ord River system, part of the remote Kimberley region.
Halls Gap wastewater treatment plant in Victoria, Australia, serves a small population of 542 with secondary treatment. It discharges 140.33 ML/year into the local catchment within the Grampians region.
Hallstead Great Bend Joint Sewer Authority plant in Great Bend, Pennsylvania provides secondary treatment for 6,200 residents. It discharges 870.65 thousand gallons per day into the local watershed.
Hallsville WWTP is a secondary treatment facility serving approximately 1,591 residents in Hallsville, Missouri. The plant discharges treated wastewater into local waterways, supporting the region's environmental health.
Halsey STP is a secondary treatment plant serving 740 residents in Halsey, Oregon. It discharges 378.54 m³/day of treated wastewater, with a designed capacity of 745.72 m³/day.
HALSEY WWTP is a secondary treatment plant serving 59 people in Halsey, Nebraska. It discharges 18.93 thousand cubic meters per year into local waterways.
HALTWHISTLE STW is a secondary treatment plant serving Haltwhistle, England, UK. It treats wastewater for approximately 3,859 people with a designed capacity of 3,859 m³/day.
HAM SUR HEURE wastewater treatment plant serves Beignée, Belgium, with secondary treatment. It has a design capacity of 8,900 m³/day and serves a population of 1,861.
Hamberge Buurredder is a closed secondary treatment plant in Hamberge, Schleswig-Holstein, Germany. It served 1,500 people with a designed capacity of 1,500 m³/day.
HAMBURG STL is a secondary wastewater treatment plant serving 1,200 people in Fremont County, Iowa. It discharges 802.51 units of treated effluent and has a designed capacity of 953.92 units.