3 plants indexed.
CLEMONS STL is a secondary wastewater treatment plant in Marshall County, Iowa, serving 173 people. It discharges 113.56 volume units and operates under U.S. EPA Clean Water Act regulations.
GILMAN STL is a secondary wastewater treatment plant in Greencastle Township, Marshall County, Iowa, serving a population of 509. It discharges 227.13 volume units daily with a designed capacity of 264.98 volume units.
State Center WWTP is a secondary treatment plant in Marshall County, Iowa, serving 1,349 people. It discharges 643.52 million gallons per year and operates under U.S. EPA NPDES regulations.