LIMA WWT Wastewater Treatment Plant, New Lima, Oklahoma

LIMA WWT is a municipal wastewater treatment plant located on Gross Street in New Lima, a small community in Seminole County, Oklahoma, United States. The plant serves a population of 74 and is part of the region's infrastructure for managing domestic wastewater. As a secondary treatment facility, LIMA WWT meets the standard level of treatment required under the US Clean Water Act for municipal plants. The plant has a designed capacity of 37.85 volume units and currently discharges 26.50 volume units, indicating operational headroom. Plants of this scale in Oklahoma are typically regulated under the National Pollutant Discharge Elimination System (NPDES) program administered by the Oklahoma Department of Environmental Quality. The treated effluent from LIMA WWT is discharged into local waterways that ultimately drain into the Canadian River basin, part of the larger Arkansas-White-Red River system. This watershed supports diverse aquatic life and provides water for agricultural and recreational uses downstream. The plant's operation helps protect water quality in this inland region.

LIMA WWT discharges into local streams that flow into the Canadian River, a major tributary of the Arkansas River, which eventually reaches the Mississippi River and the Gulf of Mexico. The surrounding watershed in Seminole County is characterized by mixed agricultural and rural land use, and the plant's secondary treatment helps reduce nutrient and organic loads that could otherwise contribute to downstream eutrophication. The receiving waters support fish populations and are used for recreation, making effective treatment important for ecological health.