18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
Havreneset Sor RD 6 is a secondary treatment plant serving 768 people in Florø, Norway. It discharges 333.07 m³/day of treated wastewater near the coast of Vestland county.
Hawarden wastewater treatment plant serves the Hurunui District in Canterbury, New Zealand, treating wastewater for a small population of 130 with secondary treatment.
HAWARDEN STP is a secondary wastewater treatment plant serving Hawarden, Iowa. It treats municipal wastewater with a discharge volume of 643.52 and a designed capacity of 2536.22.
Hawea wastewater treatment plant serves the Queenstown-Lakes District in Otago, New Zealand.
Hawk Point WWTP is a secondary treatment plant serving 669 residents in Hawk Point, Missouri. It discharges approximately 303 m³/day of treated wastewater, with a designed capacity of 469 m³/day.
Hawker wastewater treatment plant in South Australia serves a small population of 288 with secondary treatment. The plant discharges treated effluent into the local environment, supporting the arid Flinders Ranges region.
Hawkes Bay Outfall is a secondary treatment plant serving 309 people in Hawkes Bay, Newfoundland and Labrador, Canada.
Hawkeye WWTP is a secondary treatment plant serving 449 people in Hawkeye, Iowa. It discharges 189.27 megaliters of treated wastewater annually, with a designed capacity of 264.98 megaliters.
Hawkins WWTP is a secondary treatment plant serving approximately 1,447 residents in Hawkins, Texas. It discharges treated wastewater into local waterways, supporting the region's water quality.
Hawkins WWTP is a secondary treatment plant serving 305 residents in Hawkins, Wisconsin. It discharges 227.13 megaliters of treated wastewater annually, operating under U.S. EPA NPDES regulations.
HAWN STATE PARK wastewater treatment plant serves a small population of 100 in Ste. Genevieve County, Missouri. It provides secondary treatment and discharges 37.85 cubic meters of treated effluent.
Haworth WWT is a secondary treatment plant serving 354 people in Haworth, Oklahoma. It discharges 151.42 thousand cubic meters per year into local waterways.
Hay Wastewater Treatment Plant in New South Wales, Australia, provides secondary treatment for a population of 2,550. The plant discharges treated effluent into the local environment, supporting the Murrumbidgee River catchment.
HAY ON WYE SEWAGE TREATMENT WORKS STW is a secondary treatment plant in Cusop, England, serving 2,100 people. It discharges 467.53 m³/day of treated wastewater into the local environment.
Hay Springs WWTP is a secondary treatment plant serving 927 people in Hay Springs, Nebraska. It discharges 340.69 units of treated wastewater, operating under U.S. EPA NPDES regulations.
Hayden wastewater treatment plant in Hayden, Colorado, serves 1,700 people with secondary treatment. It discharges 946.35 cubic meters of treated wastewater daily, operating under US EPA NPDES regulations.
Hayes Center WWTP is a secondary treatment plant in Hayes County, Nebraska, serving a small population of 240. It discharges 75.71 units of treated wastewater daily.
HAYFIELD STW is a secondary treatment plant in High Peak, England, serving approximately 2,862 people. It discharges 637.18 cubic meters of treated wastewater daily, with a designed capacity of 3,113 cubic meters.
HAYS WWTF is a secondary treatment plant in Hays, Montana, serving 75 people. It discharges 30.28 megaliters of treated wastewater annually and has a designed capacity of 37.85 megaliters.
The Haysi Sewerage System is a secondary treatment plant serving 1,950 residents in Haysi, Virginia. It discharges treated wastewater into local waterways within the Upper Tennessee River Basin.