762 plants indexed.
MANLY WWTP is a secondary treatment plant in Worth County, Iowa, serving a population of 1,349. It discharges 492.10 million gallons per year and has a designed capacity of 757.08 million gallons per year.
Manning WWTP is a secondary treatment plant serving 1,484 people in Manning, Iowa. It discharges treated wastewater into local waterways, operating under US EPA NPDES regulations.
MAPLETON WWTP is an advanced treatment facility serving Mapleton, Iowa. It treats wastewater for approximately 1,294 residents with a design capacity of 700.30 volume units.
Marathon WWTP is a secondary treatment plant in Buena Vista County, Iowa, serving 237 people. It discharges 113.56 megaliters of treated wastewater annually, with a designed capacity of 151.42 megaliters.
MARBLE ROCK WWTP is a secondary treatment plant in Floyd County, Iowa, serving 361 people. It discharges 189.27 megaliters of treated wastewater annually, operating under U.S. Clean Water Act regulations.
Marcus WWTP is a secondary treatment plant serving 1,139 people in Marcus, Iowa. It discharges 416.40 units of treated wastewater daily, with a designed capacity of 984.20 units.
MARENGO STL is a secondary wastewater treatment plant in Washington Township, Iowa County, Iowa, serving approximately 2,535 people. It discharges treated effluent inland, away from coastal waters.
MARQUETTE WWTP is a secondary treatment plant serving approximately 1,000 people in Marquette, Iowa. It discharges 227.13 thousand cubic meters per year and has a designed capacity of 590.52 thousand cubic meters per year.
MARTELLE WASTE STAB PONDS is a secondary treatment plant in Linn County, Iowa, serving 280 people. It discharges 113.56 megaliters per year and has a designed capacity of 302.83 megaliters.
Martensdale WWTP is a secondary treatment plant serving 467 people in Martensdale, Iowa. It discharges 227.13 units of treated wastewater and has a designed capacity of 302.83 units.
MARTINSBURG RUSS is a secondary wastewater treatment plant in Keokuk County, Iowa, serving 157 people. It discharges 22.71 million gallons per year and operates under U.S. EPA NPDES regulations.
Massena WWTP is a secondary treatment plant serving 414 people in Massena, Iowa. It discharges 151.42 units of treated wastewater daily, with a designed capacity of 794.93 units.
MAURICE WWTP is a secondary treatment facility serving 275 people in Maurice, Iowa. It discharges 113.56 megaliters of treated wastewater annually, operating under U.S. EPA NPDES regulations.
The Maxwell WWTP in Maxwell, Iowa, serves a small community of 921 people with secondary treatment. It discharges treated wastewater into local waterways, supporting the region's environmental health.
Maynard WWTP is a secondary treatment plant in Fayette County, Iowa, serving 518 people. It discharges 367.19 million gallons per year and operates under the US Clean Water Act.
McCallsburg STL is a secondary wastewater treatment plant in McCallsburg, Iowa, serving a population of 292. It discharges 113.56 megaliters annually and has a designed capacity of 151.42 megaliters.
McCausland WWTP is a secondary treatment facility serving 308 people in McCausland, Iowa. It discharges 151.42 megaliters per year and operates under U.S. EPA Clean Water Act regulations.
MCGREGOR WWTP is a secondary treatment plant serving McGregor, Iowa, with a designed capacity of 567.81 m³/day and an average discharge of 454.25 m³/day.
Mechanicsville WWTP is a secondary treatment facility serving approximately 1,173 residents in Mechanicsville, Iowa. It discharges treated wastewater into local waterways, supporting the region's water quality.
Mediapolis STL is a secondary wastewater treatment plant in Mediapolis, Iowa, serving a population of 1,637. It discharges 757.08 cubic meters per day and operates under U.S. Clean Water Act regulations.