18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
Hvolsvollur wastewater treatment plant serves the town of Hvolsvöllur in southern Iceland. It provides secondary treatment for a population of 2,500, discharging treated effluent into the local watershed.
HWEA Crofton STP is a secondary wastewater treatment plant serving 935 people in Christian County, Kentucky, United States. It discharges 681.37 volume units daily with a designed capacity of 757.08 volume units.
HYANNIS WWTP serves 301 people in Hyannis, Nebraska, providing secondary treatment. The plant discharges 121.13 million gallons per year into the local watershed.
Hyattstown WWTP is a secondary treatment plant serving 105 people in Hyattstown, Maryland, United States. It discharges 18.93 MLD of treated wastewater.
Hyde Park T SD1 WWTP is a secondary treatment plant in Town of Hyde Park, New York, serving 700 people. It discharges 374.76 thousand gallons per day and has a designed capacity of 499.67 thousand gallons per day.
HYDEN Wooten is a projected secondary treatment plant serving 479 people in Hyden, Kentucky. It discharges 189.27 cubic meters per day into local waterways within the Kentucky River basin.
Hyden WWTP is a secondary treatment plant serving 1,120 people in Hyden, Kentucky. It discharges 454.25 thousand cubic meters of treated wastewater annually, with a designed capacity of 757.08 thousand cubic meters.
Hydro WWT is a secondary treatment plant serving 1,090 people in Caddo County, Oklahoma. It discharges 454.25 units of treated wastewater daily, with a designed capacity of 435.32 units.
Hydrocentrum is a secondary wastewater treatment plant in Czeremcha, Podlaskie Voivodeship, Poland, serving a population of 438 with a designed capacity of 1,100 m³/day.
Hydrocentrum is a closed secondary treatment plant in Małe Łąki, Poland, serving 587 people. It discharged 83.70 m³/day with a designed capacity of 4,000 m³/day.
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.