Marionville WWTP - Advanced Wastewater Treatment in Lawrence County, Missouri

Marionville WWTP is a municipal wastewater treatment facility located in Lawrence County, Missouri, serving a population of approximately 2,225 residents. The plant provides advanced treatment, ensuring high-quality effluent before discharge into the local watershed. With a designed capacity of 1,892.70 thousand cubic meters per year and an actual discharge volume of 889.57 thousand cubic meters, the plant operates well within its capacity. As an advanced treatment facility, it goes beyond secondary treatment requirements, likely incorporating nutrient removal or other tertiary processes to meet stringent water quality standards. The treated effluent is discharged into the local watershed, which ultimately drains into the James River and then the White River system, flowing into the Mississippi River and eventually the Gulf of Mexico. The plant plays a key role in protecting downstream water quality and aquatic ecosystems in the Ozarks region.

The plant discharges into the James River watershed, part of the larger White River basin that flows through Missouri and Arkansas. This region supports diverse aquatic life, including several sensitive species. The advanced treatment helps reduce nutrient loading, which is critical for preventing eutrophication in downstream reservoirs and maintaining water quality for recreation and drinking water.