FCPWSD 3 Charing Cross Wastewater Treatment Plant, Franklin County, Missouri

FCPWSD 3 Charing Cross is a wastewater treatment plant located in Franklin County, Missouri, United States. It serves a small population of 590 residents and operates as a secondary treatment facility, which is the standard level required by the US Clean Water Act for municipal plants of this scale. The plant's designed capacity is 261.19 million gallons per year, with an actual discharge volume of 223.34 million gallons per year, indicating it operates below its capacity. As a US facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Missouri Department of Natural Resources, which regulate effluent limits and monitoring. The plant discharges into a local water body that ultimately drains into the Mississippi River basin, a major watershed that flows into the Gulf of Mexico. Its operations help protect downstream aquatic ecosystems and support water quality in the region.

The plant discharges into a tributary of the Missouri River, which flows into the Mississippi River and eventually reaches the Gulf of Mexico. This watershed supports diverse aquatic life and is an important migratory corridor for fish and birds. The plant's secondary treatment helps reduce nutrient loads and protect downstream water quality in this ecologically significant basin.