Overview
NEILLSVILLE STP serves approximately 2,652 residents in Neillsville, Wisconsin. The plant discharges treated wastewater into local waterways within the Black River watershed.
NEILLSVILLE STP is a municipal wastewater treatment facility located in Neillsville, Clark County, Wisconsin. Serving a population of around 2,652, the plant is part of the region's infrastructure for managing domestic wastewater from the community. As a small-scale facility in the United States, the plant operates under the Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all discharges. Plants of this size typically employ secondary treatment to meet federal and state standards. The treated effluent is discharged into local streams that drain into the Black River, a tributary of the Mississippi River. The Black River supports diverse aquatic life and is important for regional water quality. Proper treatment helps protect downstream ecosystems and recreational uses.
Environmental context
The plant discharges into the Black River watershed, which flows southward to join the Mississippi River near La Crosse, Wisconsin. This river system supports a variety of fish and wildlife, including species of concern such as the eastern massasauga rattlesnake and several mussel species. The watershed is also used for recreation, including fishing and boating, making effective wastewater treatment essential for maintaining water quality.
Frequently asked questions
NEILLSVILLE STP is located in Neillsville, Clark County, Wisconsin, United States, along the route from Merrilian to Marshfield.
The plant serves approximately 2,652 residents of Neillsville and the surrounding area.
The treated wastewater is discharged into local streams within the Black River watershed, which ultimately flows into the Mississippi River.
As a U.S. facility, NEILLSVILLE STP operates under the Clean Water Act and is required to have an NPDES permit issued by the Wisconsin Department of Natural Resources, ensuring compliance with effluent limits.
Small municipal plants in the U.S. typically employ secondary treatment, which includes biological processes to remove organic matter and suspended solids, meeting federal standards under the Clean Water Act.
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