COOK WWTP - Johnson County, Nebraska Wastewater Treatment Plant

COOK WWTP is a municipal wastewater treatment facility located in Johnson County, Nebraska, United States. It serves a small population of 326 residents, reflecting its role in a rural community. The plant is situated inland, far from coastal waters, and its operations are part of the broader wastewater infrastructure in the region. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal facilities. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant's design capacity matches its discharge volume at 151.42 units, indicating consistent operation at full capacity. As a small facility, it is likely subject to state-level NPDES permitting through the Nebraska Department of Environment and Energy. The treated effluent from COOK WWTP is discharged into local water bodies that ultimately drain into the Missouri River basin, a major tributary of the Mississippi River system. This downstream connection highlights the plant's role in protecting water quality in the broader watershed, which supports agricultural activities and aquatic habitats in the Great Plains region.

COOK WWTP discharges into local streams that flow into the Missouri River basin, part of the larger Mississippi River watershed. This region is characterized by agricultural land use, and the plant's secondary treatment helps reduce nutrient and organic pollutant loads that could otherwise contribute to downstream eutrophication. The receiving waters support diverse aquatic life and are important for irrigation and recreation in southeastern Nebraska.