18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
Holstein WWTP is a secondary treatment plant serving 229 people in Holstein, Nebraska. It discharges 75.71 thousand cubic meters annually under US Clean Water Act regulations.
Holsworthy STW is a secondary treatment plant serving 3,040 people in Torridge, Devon, England. It discharges 676.81 m³/day of treated wastewater into local waterways.
HOLT WWTP is a secondary treatment plant in Clay County, Missouri, serving 447 people with a discharge volume of 177.91 units and a designed capacity of 268.76 units.
Holte avlopsrenseanlegg is a secondary treatment plant in Harstad, Norway, serving 805 people. It discharges 349.11 ML/year and is located within 10 km of the coast.
Holton le Clay STW is a secondary treatment plant in East Lindsey, England, serving 3,440 people. It discharges 765.86 m³/day of treated wastewater and has a designed capacity of 4,950 m³/day.
Holtyre Wastewater Lagoon serves 188 people in Black River-Matheson Township, Ontario, Canada. The secondary treatment plant discharges 156 cubic meters of treated wastewater annually.
Holy Cross WWTP is a secondary treatment plant serving 374 residents in Holy Cross, Iowa. It discharges 151.42 megaliters of treated wastewater annually, operating under US EPA Clean Water Act regulations.
Holyoke City of wastewater treatment plant serves 2,261 residents in Holyoke, Colorado, with secondary treatment. It discharges treated effluent into local waterways, supporting the South Platte River basin.
Holyrood WWTP is a secondary treatment facility serving 453 people in Ellsworth County, Kansas. It discharges 170.34 volume units daily with a designed capacity of 196.84 volume units.
Holzdorf wastewater treatment plant in Jessen (Elster), Sachsen-Anhalt, Germany, serves a population of 1,395 with secondary treatment. It has a designed capacity of 4,000 m³/day and discharges 172.98 m³/day.
HOMEDALE STP is a secondary treatment plant serving 2,633 people in Homedale, Idaho. It discharges treated wastewater into local waterways, supporting the region's water quality.
HOMER STP is a secondary wastewater treatment plant in Homer Township, Michigan, serving about 2,341 people. It discharges treated effluent into local waterways, supporting the Kalamazoo River watershed.
Homer WWTP is a secondary treatment facility serving 590 residents in Homer, Nebraska. The plant discharges treated wastewater into local waterways, operating under US EPA and state regulatory frameworks.
Homerville WPCP is a secondary treatment plant serving 2,468 people in Homerville, Georgia. It discharges 946.35 thousand cubic meters of treated wastewater annually, with a designed capacity of 1,892.70 thousand cubic meters.
Homestead SD is a secondary wastewater treatment plant in Iowa County, Iowa, serving 150 people. It discharges 283.91 cubic meters per day and has a designed capacity of 317.97 cubic meters per day.
Homestead Village WWTP is a secondary treatment plant serving 185 people in Homestead, Missouri. It discharges treated wastewater into local waterways, supporting the region's water quality.
Homrogd Szennyviztisztito Telep is a secondary wastewater treatment plant serving the small community of Homrogd, Hungary. It has a designed capacity of 1,000 m³/day and discharges treated effluent into local waterways.
Honaker WWTP and Collection System is a secondary treatment plant serving 1,535 people in Honaker, Virginia. It discharges 870.65 thousand gallons per day and operates under U.S. Clean Water Act regulations.
Honey Creek State Park ADLM is a secondary treatment plant in Iconium, Iowa, serving 119 people. It discharges 117.35 units of treated wastewater into the local watershed.
Honokaa WWTF is a secondary treatment plant serving 1,500 people in Honoka'a, Hawaii. It discharges treated wastewater into the local watershed, contributing to the protection of downstream coastal waters.