Overview
Woodstock South STP serves approximately 12,385 residents in Woodstock, Illinois. The plant operates under U.S. EPA and Illinois EPA regulations for municipal wastewater treatment.
Woodstock South STP is a municipal wastewater treatment facility located on Dieckman Street in Woodstock, McHenry County, Illinois. The plant serves a population of around 12,385 people, placing it in the small-to-medium agglomeration category for U.S. wastewater infrastructure. As a U.S. facility, the plant operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permitting program, administered by the Illinois Environmental Protection Agency. For a plant of this scale, secondary treatment is typically required, with possible additional nutrient controls depending on the receiving water body's sensitivity. The plant's treated effluent is discharged to a local waterway within the Fox River basin, which flows into the Illinois River and ultimately the Mississippi River. This watershed supports diverse aquatic life and provides drinking water for downstream communities, making effective treatment essential for regional water quality.
Environmental context
The plant discharges into a tributary of the Fox River, which flows through northeastern Illinois into the Illinois River and then the Mississippi River. This watershed supports a variety of fish and macroinvertebrate species and is used for recreation and drinking water. The Fox River basin is ecologically sensitive to nutrient loading, which can cause algal blooms and oxygen depletion.
Frequently asked questions
Woodstock South STP is located on Dieckman Street in Woodstock, McHenry County, Illinois, United States.
The plant serves approximately 12,385 residents in the Woodstock area.
The plant discharges treated effluent into a local waterway within the Fox River basin, which flows into the Illinois River and ultimately the Mississippi River.
The plant operates under the U.S. Clean Water Act, with NPDES permits issued by the Illinois Environmental Protection Agency. These permits set limits on pollutants to protect water quality.
For a plant of this scale, secondary treatment is standard, which includes biological processes to remove organic matter and suspended solids. Some plants may also have nutrient removal if the receiving water body is sensitive to nitrogen or phosphorus.
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