Overview
Crystal Lake STP 3 serves 1,832 residents in Crystal Lake, Illinois. The plant operates under the US Clean Water Act framework for small agglomerations.
Crystal Lake STP 3 is a municipal wastewater treatment plant located on Knack Boulevard in Crystal Lake, McHenry County, Illinois. It serves a population of 1,832, classifying it as a small-scale facility within the state's wastewater infrastructure. As a US-based plant, Crystal Lake STP 3 operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program. The Illinois Environmental Protection Agency oversees permitting and compliance for facilities in the state. The plant's treated effluent discharges into local waterways within the Fox River watershed, which ultimately drains into the Illinois River and then the Mississippi River. This system supports diverse aquatic life and provides water resources for communities downstream. The plant plays a role in protecting water quality in the region's surface waters.
Environmental context
Crystal Lake STP 3 discharges into the Fox River basin, a tributary of the Illinois River that flows into the Mississippi River. The receiving waters support a variety of fish and wildlife, including species important for recreational fishing. The plant's operations help maintain water quality in this ecologically significant watershed, which drains into the Gulf of Mexico.
Frequently asked questions
Crystal Lake STP 3 is located on Knack Boulevard in Crystal Lake, McHenry County, Illinois, United States.
The plant serves a population of 1,832 residents in the Crystal Lake area.
The plant discharges treated effluent into local waterways within the Fox River watershed, which flows into the Illinois River and eventually the Mississippi River.
As a US facility, Crystal Lake STP 3 operates under the Clean Water Act and is subject to NPDES permits issued by the Illinois Environmental Protection Agency.
Small plants in the US typically use secondary treatment processes, such as activated sludge or lagoon systems, to meet EPA effluent standards for biochemical oxygen demand and total suspended solids.
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