18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
HARDIN STP is a secondary wastewater treatment plant serving 699 people in Hardin, Kentucky. It discharges treated effluent near the Tennessee River system, operating under US EPA and Kentucky state regulations.
HARDIN WWTP is a secondary treatment plant in Ray County, Missouri, serving 569 people. It discharges treated wastewater into local waterways under US EPA NPDES regulations.
Hardtner WWTP is a secondary treatment plant serving 191 people in Hardtner, Kansas. It discharges 75.71 million gallons per year and has a design capacity of 132.49 million gallons.
Hardy WWTP is a secondary treatment plant serving the village of Hardy, Nebraska. It discharges treated wastewater into local waterways, supporting the region's water quality.
Harlem wastewater treatment plant in Garden Route District Municipality, Western Cape, South Africa serves 3,219 people with secondary treatment. It discharges 500 m³/day into the local watershed.
Harlem WPCP is a secondary treatment plant serving 1,643 people in Harlem, Georgia. It discharges treated wastewater into local waterways, with a design capacity of 946.35 m³/day and an average flow of 794.94 m³/day.
Harlem WWTP in Blaine County, Montana, provides secondary treatment for a small population of 795. The plant discharges treated wastewater with a daily volume of approximately 200,630 gallons.
Harlington STW is a secondary wastewater treatment plant serving 2,086 people in Doncaster, England. It discharges 464.42 m³/day and operates under UK regulations.
Harlowton Lagoon is a secondary wastewater treatment plant in Wheatland County, Montana, serving approximately 1,017 people. It discharges treated wastewater into the local watershed.
HARMAN WWTP is a secondary treatment plant serving 190 people in Harman, West Virginia. It discharges 151.42 megaliters of treated wastewater annually, operating under US Clean Water Act regulations.
Harmony Hills WWTP is a secondary treatment facility in Holloway, Louisiana, serving approximately 248 people. It discharges 151.42 units of treated wastewater daily, operating under US EPA NPDES regulations.
Harmony WWTP is a secondary treatment plant serving 788 people in Harmony, North Carolina. It discharges 302.83 thousand cubic meters per year and has a designed capacity of 946.35 thousand cubic meters per year.
HARPER WWTP is a secondary treatment plant serving 147 people in Keokuk County, Iowa. It discharges 30.28 megaliters of treated wastewater annually, with a designed capacity of 75.71 megaliters.
Harpers Ferry WWTP is a secondary treatment plant serving 330 people in Harpers Ferry, Iowa. It discharges 113.56 million gallons per year and operates under U.S. EPA NPDES regulations.
Harrah S_T Facility is a secondary wastewater treatment plant serving 512 people in Harrah, Washington. It discharges 151.42 megaliters annually and has a designed capacity of 302.83 megaliters.
Harrington S T FAC is a secondary wastewater treatment plant in Harrington, Washington, serving 420 people. It discharges 253.62 million gallons annually and operates under the US Clean Water Act.
Harris Road Outfall is a secondary treatment plant serving 178 people in unincorporated Newfoundland, Canada. It discharges treated wastewater near the coast of Newfoundland and Labrador.
HARRIS WWTP is a secondary treatment plant in Harris, Iowa, serving 170 people. It discharges 37.85 units of treated wastewater daily, with a designed capacity of 75.71 units.
Harrison S_T Facility is a secondary wastewater treatment plant serving 203 people in Harrison, Idaho. It discharges treated water into the local watershed, supporting the Coeur d'Alene Lake basin.
Harrison WWTF is a secondary treatment plant serving 2,108 people in Harrison, Michigan. It discharges 454.25 thousand gallons per day and has a designed capacity of 832.79 thousand gallons per day.