Gilmore WWTP - Edmondson, Arkansas Advanced Wastewater Treatment Plant

Gilmore WWTP is a municipal wastewater treatment facility located in Edmondson, Crittenden County, Arkansas, United States. It serves a small population of 188 residents, reflecting its role in a rural community. The plant is situated inland, far from coastal areas, and operates under the regulatory framework of the US Clean Water Act. The facility provides advanced treatment, which goes beyond the secondary treatment standard typically required for municipal plants. Its design capacity is 378.54 million gallons per day, though current discharge volume is 3.79 million gallons per day. As a US plant, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Arkansas Department of Energy and Environment, ensuring compliance with water quality standards. The treated effluent is discharged into a local water body, ultimately contributing to the Mississippi River watershed. This region is part of the larger Mississippi River Basin, which drains into the Gulf of Mexico. The advanced treatment helps protect downstream aquatic ecosystems and supports water quality in the sensitive delta environment.

The plant discharges into a local water body within the Mississippi River Basin, which flows south to the Gulf of Mexico. This watershed supports diverse aquatic life and is an important migratory corridor for fish and birds. The advanced treatment helps reduce nutrient loading, which is critical for mitigating hypoxia in the Gulf of Mexico.