18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
HILLMAN STP is a secondary wastewater treatment plant serving 674 people in Hillman, Michigan, USA. It discharges 189.27 megaliters annually and has a designed capacity of 264.98 megaliters.
HILLS WWTP is a secondary treatment plant serving Hills, Iowa, with a capacity of 605.66 m³/day and a discharge volume of 378.54 m³/day.
Hillsboro Lagoon is a secondary wastewater treatment plant serving Hillsboro, North Dakota. It treats approximately 1,603 people with a discharge volume of 605.67 units and a designed capacity of 1,211.33 units.
HILLSBORO STL is a secondary wastewater treatment plant in Henry County, Iowa, serving 151 people. It discharges 75.71 units of treated wastewater, operating under U.S. EPA NPDES regulations.
Hillsboro WWTP is a secondary treatment facility serving 250 people in Hillsboro, West Virginia. It discharges 189.27 cubic meters of treated wastewater daily.
Hillsborough wastewater treatment plant in Royal Hillsborough, Northern Ireland, serves approximately 4,034 people with secondary treatment. The facility is now closed.
Hillsborough Lagoon is a secondary treatment plant serving 1,058 people in Hillsborough Parish, New Brunswick, Canada. It discharges treated wastewater near the Bay of Fundy coast.
Hillsdale I D WWTP is a secondary treatment facility in Hillsdale, Kansas, serving 267 people. It discharges 98.42 million gallons per day and has a designed capacity of 151.42 million gallons per day.
Hillsdale T WWTP and Collection is a secondary treatment plant serving 325 people in Town of Hillsdale, New York. It discharges 45.43 megaliters of treated wastewater annually, operating under US Clean Water Act regulations.
HILLSDALE WWT is a secondary treatment plant serving 101 people in Hillsdale, Oklahoma. It discharges 37.85 cubic meters of treated wastewater daily, operating under US EPA NPDES regulations.
Hillston wastewater treatment plant in New South Wales, Australia, serves a small population of 1,112 with secondary treatment. It discharges 287.63 megalitres annually into the local environment.
Hilltown wastewater treatment plant in County Down, Northern Ireland serves 2,143 people with secondary treatment. It discharges 477.11 megalitres annually and operates under the EU Urban Waste Water Treatment Directive.
HILLVIEW ACRES SUBD is a secondary wastewater treatment plant in Boone County, Missouri, serving 215 people. It discharges 75.71 units of treated wastewater daily, with a designed capacity of 83.28 units.
HILMAR WTP is a secondary treatment plant in Hilmar, California, serving about 5,000 people. It discharges 908.50 megaliters of treated wastewater annually, with a designed capacity of 1,135.62 megaliters.
Hilton Creek WWTF is a secondary treatment plant in Mono County, California, serving 357 people. It discharges 113.56 million gallons per year and has a designed capacity of 302.83 million gallons per year.
Himatangi Beach wastewater treatment plant serves 193 people in Manawatū-Whanganui, New Zealand. It provides secondary treatment and discharges treated wastewater near the coast.
Himmelried Ostwaldeck is a secondary treatment plant in Himmelried, Solothurn, Switzerland, serving 520 people with a designed capacity of 750 m³/day and a discharge volume of 236.04 m³/day.
Himmelried_Westschindelboden is a secondary treatment plant in Himmelried, Solothurn, Switzerland, serving 390 people. It discharges 177.03 m³/day of treated wastewater into the local watershed.
Hinckley wastewater treatment plant serves 693 residents in Hinckley, Utah, with secondary treatment. It discharges 302.83 megaliters annually and has a designed capacity of 378.54 megaliters.
HINDERWELL STW is a secondary wastewater treatment plant in Loftus, England, serving approximately 2,000 people. It discharges treated effluent near the North Sea coast, operating under UK regulations.