Hammond WWTP - Major Wastewater Treatment Plant in Hammond, Indiana

Hammond WWTP is a major wastewater treatment facility located in Hammond, Indiana, serving a population of approximately 218,132 residents. Situated in Lake County near the southern shore of Lake Michigan, the plant plays a critical role in managing municipal wastewater for this industrial and residential community. As a large agglomeration serving over 150,000 people, the plant operates under the U. S. Clean Water Act, which requires secondary treatment as a minimum standard. The National Pollutant Discharge Elimination System (NPDES) permit program governs its discharge, ensuring compliance with water quality standards set by the Indiana Department of Environmental Management. The plant's designed capacity is reported as 1.00 (likely in million gallons per day), indicating a substantial infrastructure footprint. The treated effluent from Hammond WWTP ultimately reaches Lake Michigan, part of the Great Lakes system, which is the largest surface freshwater system in the world. The lake supports a diverse ecosystem, including fish species such as lake trout and whitefish, and provides drinking water for millions. Protecting this water body from nutrient pollution and contaminants is a key environmental priority.

Hammond WWTP discharges into the Lake Michigan basin, which drains through the Great Lakes and the St. Lawrence River to the Atlantic Ocean. The receiving waters support a complex food web and are vital for regional biodiversity, including migratory birds and fish. The plant's location near the lake's southern shore places it in a watershed that faces pressures from urban runoff and industrial activity, making effective treatment essential for maintaining water quality and ecosystem health.