18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
Higuera de Vargas wastewater treatment plant serves 3,300 people in Extremadura, Spain. It provides secondary treatment and has a designed capacity of 3,360 m³/day.
Higueras wastewater treatment plant in Nuevo León, Mexico, serves 1,745 people with secondary treatment. It discharges 172.80 m³/day of treated wastewater into local waterways, supporting the region's water quality.
Higueras de Culiacancito wastewater treatment plant in Sinaloa, Mexico, serves a small population of 183 with secondary treatment. It discharges 17.28 m³/day of treated effluent.
Hiland Acres WSD is a secondary wastewater treatment plant serving 394 people in Todd Creek, Colorado. It discharges treated water into the local watershed, supporting downstream water quality.
Hildreth WWTP is a secondary treatment plant in Franklin County, Nebraska, serving 389 people. It discharges 151.42 volume units of treated wastewater.
Hilgertshausen Tandern OT Hilgertshausen is a secondary treatment plant in Gumpmühle, Bayern, Germany. It serves a population of 1,322 and has a designed capacity of 3,000 m³/day.
Hill City WWTP is a secondary treatment facility serving approximately 1,400 residents in Hill City, Kansas. The plant discharges treated wastewater into local waterways under state regulatory oversight.
Hill County wastewater treatment plant serves Havre North, Montana, treating 136.28 megaliters of wastewater annually with secondary treatment. It operates under the US Clean Water Act's NPDES permit program.
Hill Point SD STP is a secondary wastewater treatment plant serving 109 people in the Town of Washington, Wisconsin. It discharges 37.85 m³/day of treated effluent into local waterways.
Hill Road Botwood 2 is a secondary treatment plant serving 666 people in Botwood, Newfoundland and Labrador, Canada. It discharges 299.00 cubic meters of treated wastewater daily near the coast.
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.