18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
HOLLIDAY WWTF is a secondary treatment plant in Monroe County, Missouri, serving 137 people. It discharges 53.00 units of treated wastewater daily, with a designed capacity of 75.71 units.
Holliday WWTP is a secondary treatment facility serving approximately 1,564 residents in Holliday, Texas. It discharges 492.10 megaliters per year and has a designed capacity of 757.08 megaliters.
HOLLISTER WWT is a secondary treatment plant in Tillman County, Oklahoma, serving a small population of 60. It discharges treated wastewater into local waterways, supporting the Red River basin.
Hollohaza Lakotelepi Szennyviztisztito telep is a secondary treatment plant serving 56 people in Hollóháza, Hungary. It discharges 6.60 m³/day of treated wastewater into local water bodies.
Holly Grove WWTP is a secondary treatment plant serving 602 people in Holly Grove, Arkansas. It discharges 3.79 million gallons per day into the local watershed.
Holly Hill WWTP is a secondary treatment plant serving 1,550 people in Holly Hill, South Carolina. It discharges 719.23 units of treated wastewater, operating under the US Clean Water Act framework.
Holly Ridge WWTP is a secondary treatment facility in Onslow County, North Carolina, serving 833 people. It discharges treated wastewater near the coast, with a designed capacity of 984.20 volume units.
Holme on Spalding Moor STW is a secondary treatment plant in East Riding of Yorkshire, England, serving 2,887 people. It discharges 642.75 m³/day of treated wastewater and has a designed capacity of 3,210 m³/day.
HOLME STW is a secondary treatment plant serving 3,507 people in Holme, England. It discharges 780.78 m³/day of treated wastewater within 10 km of the coast.
Holstein WWTP is a secondary treatment facility serving 1,470 people in Holstein, Iowa. It discharges 567.81 thousand cubic meters of treated wastewater annually, with a designed capacity of 1,343.82 thousand cubic meters.
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.