Carlinville STP, Carlinville

Overview

Carlinville STP is a municipal wastewater treatment plant serving approximately 5,900 residents in Carlinville, Illinois. The facility operates under the U.S. Clean Water Act framework.

Carlinville STP is a municipal wastewater treatment plant located in Carlinville, Macoupin County, Illinois. It serves a population of approximately 5,896 residents, classifying it as a small to medium-sized facility within the state's wastewater infrastructure. Under the U.S. Clean Water Act, plants of this scale are typically required to meet secondary treatment standards through the National Pollutant Discharge Elimination System (NPDES) permitting program. The Illinois Environmental Protection Agency oversees permitting and compliance for such facilities, ensuring treated effluent meets water quality standards for the receiving environment. The plant discharges treated wastewater into local waterways that ultimately drain into the Mississippi River basin. This region supports diverse aquatic life and is part of a larger watershed that feeds into the Gulf of Mexico, making proper treatment essential for downstream ecological health.

Environmental context

The plant discharges into local streams within the Mississippi River basin, which flows southward to the Gulf of Mexico. This watershed supports diverse aquatic species and is an important migratory corridor for birds and fish. The region's agricultural landscape means that nutrient management from wastewater is critical to prevent downstream eutrophication in the Gulf.

Frequently asked questions

Carlinville STP is located at 1389 Mayo Street, Carlinville, Macoupin County, Illinois, United States.

Carlinville STP serves approximately 5,896 residents, classifying it as a small to medium-sized municipal wastewater treatment plant.

The plant discharges treated effluent into local waterways that are part of the Mississippi River basin, ultimately flowing to the Gulf of Mexico.

As a municipal plant in the U.S., Carlinville STP operates under the Clean Water Act and is subject to NPDES permitting, typically enforced by the Illinois Environmental Protection Agency, requiring secondary treatment and compliance with water quality standards.

For plants of this scale, secondary treatment is standard, which includes biological processes to remove organic matter and suspended solids. Some facilities may also incorporate nutrient removal depending on local discharge requirements.