Hardin Co Water Dist 1 Fort Knox Wastewater Treatment Plant, Hardin County, Kentucky

Hardin Co Water Dist 1 Fort Knox is a municipal wastewater treatment plant located in Hardin County, Kentucky, serving a population of approximately 16,220. The facility is situated near the Fort Knox military base and discharges into local waterways within the Ohio River basin. Under the U.S. Clean Water Act, plants of this scale are required to obtain National Pollutant Discharge Elimination System (NPDES) permits, which set effluent limits based on the receiving water's quality standards. Secondary treatment is the minimum standard for municipal plants, though many facilities in the region employ additional nutrient removal to protect downstream waters. The plant's treated effluent ultimately drains into the Ohio River, a major tributary of the Mississippi River. The Ohio River supports diverse aquatic life and provides drinking water for millions. Proper treatment at this facility helps maintain water quality in this ecologically and economically significant watershed.

The plant discharges into local streams that flow into the Ohio River, a major tributary of the Mississippi River. The Ohio River basin supports diverse fish populations and provides habitat for migratory birds. Downstream, the Mississippi River carries water to the Gulf of Mexico, where nutrient pollution contributes to seasonal hypoxic zones. Effective treatment at this plant helps reduce nutrient loads and protect downstream ecosystems.