4 plants indexed.
ELK HORN WWTP is a secondary treatment facility in Shelby County, Iowa, serving a population of 669. It discharges 529.96 million gallons per year and has a designed capacity of 378.54 million gallons.
IRWIN WASTE STAB PONDS is a secondary treatment plant serving 341 people in Shelby County, Iowa. It discharges 151.42 units of treated wastewater daily, with a designed capacity of 246.05 units.
PORTSMOUTH STL is a secondary wastewater treatment plant in Shelby County, Iowa, serving a small population of 225. It discharges treated water into the local watershed, supporting downstream water quality.
Harlan WWTP serves approximately 5,100 residents in Shelby County, Iowa. The plant discharges treated wastewater into local waterways under U.S. EPA NPDES regulations.