Crystal Hill STF - Advanced Wastewater Treatment in Jefferson County, Missouri

Crystal Hill STF is an advanced wastewater treatment facility located in Jefferson County, Missouri, United States. The plant serves a population of 1,188 and operates as part of the region's municipal wastewater infrastructure. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 295.26 volume units and a current discharge volume of 155.20 volume units, the facility operates well within its capacity. As a US plant, it is subject to the Clean Water Act and operates under an NPDES permit issued by the Missouri Department of Natural Resources, ensuring compliance with federal and state water quality standards. The treated effluent is discharged into a local water body that ultimately drains into the Mississippi River basin. The Mississippi River system supports diverse aquatic life and provides drinking water for millions. The plant's advanced treatment helps protect downstream water quality in this ecologically significant watershed.

The plant discharges into a tributary of the Mississippi River, which flows into the Gulf of Mexico. The Mississippi River basin is a major ecological corridor supporting diverse fish and bird species. Advanced treatment at this plant helps reduce nutrient loading, which is critical for mitigating hypoxia in the Gulf of Mexico.