ELK RAPIDS STP - Wastewater Treatment Plant in Elk Rapids Township, Michigan

ELK RAPIDS STP is a municipal wastewater treatment plant located in Elk Rapids Township, Antrim County, Michigan, United States. It serves a population of approximately 2,744 residents, classifying it as a small community facility within the state's wastewater infrastructure. The plant is situated near the shores of Lake Michigan, within 50 km of the coast, and discharges into the local watershed. As a US facility, ELK RAPIDS STP operates under the Clean Water Act, administered by the Michigan Department of Environment, Great Lakes, and Energy (EGLE). Plants of this scale typically require secondary treatment as a minimum standard, with NPDES permits governing discharge limits to protect water quality. The designed capacity is 1.00 million gallons per day, reflecting the needs of a small agglomeration. The plant's receiving water body ultimately drains into Lake Michigan, part of the Great Lakes system, which is a critical freshwater resource. The surrounding area includes sensitive aquatic habitats and recreational waters, making effective treatment essential for maintaining ecological health and public use of the lake.

ELK RAPIDS STP discharges into a tributary of Lake Michigan, which is part of the Great Lakes basin. Lake Michigan supports diverse aquatic life, including native fish species and migratory birds, and provides drinking water for millions. The plant's location within 50 km of the coast means its effluent can influence nearshore water quality, particularly during low-flow conditions. Protecting this ecosystem requires compliance with stringent phosphorus and pathogen limits under Michigan's water quality standards.