18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
HYDROCENTRUM is a secondary treatment plant serving Brańsk, Poland. It treats wastewater for 3,800 people with a designed capacity of 4,000 m³/day, discharging into local waterways.
HYDROWIT is a secondary wastewater treatment plant in Łazy, Poland, serving a population of 1,209. It discharges treated effluent into local water bodies, supporting environmental protection in the Podkarpackie region.
Hyères Porquerolles is a secondary wastewater treatment plant on Porquerolles Island, Hyères, France. Serving 4,630 people, it discharges 825.98 m³/day and operates under EU Urban Waste Water Treatment Directive standards.
HYSHAM WWTP is a secondary treatment plant serving 410 people in Treasure County, Montana. It discharges 155.20 million gallons per year and has a designed capacity of 181.70 million gallons per year.
Hythe Lagoon is a secondary wastewater treatment plant serving 490 residents in Hythe, Alberta, Canada.
Hyzne wastewater treatment plant serves the Hyżne community in województwo podkarpackie, Poland, with secondary treatment. It discharges treated wastewater into local waterways, supporting environmental protection in the region.
I 79 South Roadside Rest STP is a secondary treatment plant in Plain Grove Township, Pennsylvania, serving 80 people. It discharges 37.85 m³/day of treated wastewater.
Iama Island wastewater treatment plant serves 315 people on Iama Island, Queensland, Australia. It provides secondary treatment and discharges treated effluent into the surrounding marine environment of the Torres Strait.
IANICO is a secondary wastewater treatment plant serving approximately 3,000 people in Atessa, Italy. It discharges treated effluent near the Adriatic coast, operating under EU Urban Waste Water Treatment Directive standards.
IBDES Y JARABA wastewater treatment plant serves the municipality of Ibdes in Aragón, Spain. It provides secondary treatment for a population of 3,585 and has a designed capacity of 4,000 m³/day.
IBERIA WWTP is a secondary treatment plant serving Iberia, Missouri. It treats wastewater for a population of 736 with a designed capacity of 567.81 cubic meters per day.
IBOS nouvelle Step is a secondary wastewater treatment plant in Ibos, Occitanie, France, serving approximately 4,300 people. It discharges 767.11 m³/day of treated effluent and has a designed capacity of 2,400 m³/day.
IDA RAISINVILLE WWSL is a secondary treatment plant serving 1,456 people in Ida Township, Michigan. It discharges treated wastewater into the Lake Erie basin via local tributaries.
IDA STP is a secondary treatment plant serving 250 people in Ida, Louisiana. It discharges treated wastewater into local waterways, supporting the Red River basin.
Idaho City Rapid Infiltration Bsn is a secondary treatment plant serving 1,485 people in Idaho City, Idaho. It discharges treated wastewater into the local watershed, supporting downstream water quality.
Idalia Lagoon is a secondary treatment plant serving Idalia, Colorado. It discharges 37.85 megaliters annually into local waterways, supporting the South Platte River basin.
Idalou WWTP is a secondary treatment plant in Lubbock County, Texas, serving a population of 2,236. It discharges treated wastewater into local waterways under the US Clean Water Act.
Idanha a Nova Norte is a secondary wastewater treatment plant serving 5,000 people in Idanha-a-Nova, Portugal. It has a designed capacity of 5,000 m³/day and discharges 833.65 m³/day.
Idanha a Nova Sul is a secondary wastewater treatment plant serving 5,000 people in Idanha-a-Nova, Portugal. It discharges treated effluent into the local watershed, contributing to the Tagus River basin.
Idaville WWTP is a secondary treatment plant serving 450 people in White County, Indiana. It discharges treated wastewater into local waterways, operating under US EPA NPDES regulations.