Overview
Greenfield STP is a secondary treatment plant serving approximately 1,097 residents in Greenfield, Illinois. It discharges treated wastewater into local waterways, supporting the region's water quality.
Greenfield STP is a municipal wastewater treatment facility located in Greenfield, Illinois, serving a small community of about 1,097 people. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for most municipal facilities to reduce organic pollutants and suspended solids before discharge. The plant has a designed capacity of 794.93 cubic meters per day and currently treats an average daily flow of 757.08 cubic meters, indicating it operates near its design capacity. As a US facility, it operates under a National Pollutant Discharge Elimination System (NPDES) permit issued by the Illinois Environmental Protection Agency, which sets effluent limits to protect water quality. The treated effluent is discharged into a local receiving water body, likely a stream or river within the Mississippi River basin. This discharge contributes to the overall water quality of downstream ecosystems, including the Illinois River and ultimately the Gulf of Mexico. Proper treatment helps protect aquatic life and recreational uses in the region.
Environmental context
Greenfield STP discharges into a local waterway that drains into the Mississippi River basin. The Mississippi River system supports diverse aquatic life and is an important migratory corridor for fish and birds. The plant's secondary treatment helps reduce nutrient loading, which is critical for preventing hypoxia in the Gulf of Mexico.
Frequently asked questions
Greenfield STP is located at 218 Pine Street, Greenfield, Illinois, United States, in Greene County.
The plant serves approximately 1,097 residents in the Greenfield community.
The plant provides secondary treatment and discharges treated effluent into a local waterway that flows into the Mississippi River basin.
Greenfield STP operates under the US Clean Water Act, with an NPDES permit issued by the Illinois Environmental Protection Agency, which sets effluent limits to protect water quality.
For small communities of about 1,000 people, secondary treatment is standard, often using activated sludge or lagoon systems, as required by the Clean Water Act to reduce organic pollutants and suspended solids.
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