CLARK WWTP - Secondary Wastewater Treatment in Randolph County, Missouri

CLARK WWTP is a municipal wastewater treatment facility located on County Road 241 in Randolph County, Missouri. The plant serves a small community of 298 residents, providing essential sanitation services in a rural setting. As a secondary treatment plant, it processes an average daily flow of 83.28 units, with a designed capacity of 132.49 units, indicating operational headroom for future growth. The plant operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater discharges. Facilities of this scale are typically permitted through the Missouri Department of Natural Resources under the National Pollutant Discharge Elimination System (NPDES), ensuring compliance with effluent limits that protect water quality. The treated effluent from CLARK WWTP is discharged into local streams that drain into the Missouri River watershed, ultimately reaching the Mississippi River and the Gulf of Mexico. The plant plays a key role in safeguarding downstream aquatic ecosystems by reducing organic pollutants and nutrients before release.

The plant's discharge enters small tributaries within the Missouri River basin, which flows into the Mississippi River and then the Gulf of Mexico. This watershed supports diverse aquatic life and is an important migratory corridor for fish and birds. The secondary treatment process helps mitigate nutrient loading, which is critical for preventing hypoxia in the Gulf of Mexico.