Overview
Vandalia WWTP serves approximately 4,859 people in Ralls County, Missouri. The facility operates under the U.S. Clean Water Act, which mandates secondary treatment for municipal wastewater plants of this scale.
Vandalia WWTP is a municipal wastewater treatment facility located in Ralls County, Missouri, serving a population of about 4,859. The plant is situated in a rural area of northeastern Missouri, near the city of Vandalia. As a publicly owned treatment works, it plays a key role in managing local wastewater and protecting water quality in the region. Under the U.S. Clean Water Act, wastewater treatment plants serving populations of this size are typically required to provide secondary treatment, which involves biological processes to remove organic matter and suspended solids. The National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Missouri Department of Natural Resources, governs the plant's discharge limits and monitoring requirements. The plant's treated effluent is discharged into a local waterway that eventually drains into the Mississippi River basin. The Mississippi River system supports diverse aquatic life and provides drinking water for millions downstream. Proper treatment at Vandalia WWTP helps reduce nutrient and pollutant loads, contributing to the ecological health of the broader watershed.
Environmental context
The plant discharges into a tributary of the Salt River, which flows into the Mississippi River near the confluence with the Missouri River. This region is part of the Upper Mississippi River basin, a critical migratory corridor for waterfowl and fish species. The watershed supports agricultural land use, and nutrient management is important to prevent downstream algal blooms in the Gulf of Mexico.
Frequently asked questions
Vandalia WWTP is located on Hummingbird Lane in Ralls County, Missouri, near the city of Vandalia. The facility serves the local community in northeastern Missouri.
The plant serves approximately 4,859 people, making it a small to medium-sized municipal wastewater treatment facility.
Treated effluent from Vandalia WWTP is discharged into a local tributary that flows into the Salt River, which eventually reaches the Mississippi River. The discharge is regulated under an NPDES permit issued by the Missouri Department of Natural Resources.
Vandalia WWTP operates under the U.S. Clean Water Act, which requires municipal plants to meet secondary treatment standards. The facility must comply with its NPDES permit, which sets limits on pollutants like BOD, TSS, and nutrients.
For plants serving around 5,000 people, secondary treatment is standard. This typically involves biological processes such as activated sludge or trickling filters to remove organic matter and solids. Some plants may also include disinfection and nutrient removal depending on local requirements.
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