Tampico STP Wastewater Treatment Plant, Tampico, Illinois

Tampico STP is a municipal wastewater treatment facility located on Hahnaman Road in Tampico, Whiteside County, Illinois. The plant serves a small population of 772 people, reflecting the rural character of the community. As a secondary treatment plant, it provides biological treatment to reduce organic pollutants and suspended solids before discharge. The plant operates under the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all wastewater discharges. For small communities like Tampico, secondary treatment is the standard requirement, ensuring compliance with federal water quality standards. The plant has a designed capacity of 605.66 thousand gallons per day and currently handles an average daily flow of 367.19 thousand gallons per day. The treated effluent from Tampico STP is discharged into local streams that ultimately drain into the Mississippi River basin. This region is part of the Upper Mississippi River watershed, which supports diverse aquatic life and provides drinking water for millions downstream. Proper treatment at this facility helps protect water quality in the receiving waters and contributes to the ecological health of the broader Mississippi River system.

Tampico STP discharges into tributaries of the Rock River, which flows into the Mississippi River near the Quad Cities. The Mississippi River in this reach supports a rich aquatic ecosystem, including numerous fish species and migratory birds. The plant's secondary treatment helps reduce nutrient loads and organic pollution, protecting downstream water quality in this ecologically significant river system.