Overview
SANDWICH STW serves approximately 6,009 people in Sandwich, Illinois. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater facilities.
SANDWICH STW is a municipal wastewater treatment plant located in Sandwich, Illinois, serving a population of about 6,009 residents. The facility is situated in DeKalb County, part of the state's inland region, and is managed as part of the local wastewater infrastructure. As a U.S. plant, SANDWICH STW operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program. For a community of this size, secondary treatment is typically required to meet effluent limits for biochemical oxygen demand and total suspended solids. Regulatory standards ensure adequate treatment for the population served. The plant discharges treated wastewater to a local receiving water body, which ultimately drains into the Illinois River watershed. This river system flows into the Mississippi River, contributing to the larger Gulf of Mexico drainage basin. The plant plays a role in protecting downstream water quality and aquatic habitats.
Environmental context
SANDWICH STW discharges into a local waterway that is part of the Illinois River basin, which flows into the Mississippi River and eventually the Gulf of Mexico. The watershed supports diverse aquatic life and is used for recreation and agriculture. Proper treatment helps prevent nutrient pollution and protects downstream ecosystems.
Frequently asked questions
SANDWICH STW is located in Sandwich, Illinois, in DeKalb County, United States.
SANDWICH STW serves approximately 6,009 people in the Sandwich area.
The plant discharges treated wastewater to a local water body that is part of the Illinois River watershed, which flows into the Mississippi River and ultimately the Gulf of Mexico.
As a U.S. municipal wastewater plant, SANDWICH STW operates under the Clean Water Act and is regulated by an NPDES permit issued by the Illinois Environmental Protection Agency.
For a population of around 6,000, secondary treatment is standard, which includes biological processes to reduce organic matter and suspended solids, meeting EPA effluent guidelines.
Nearby plants