CABLE SD 1 STP Wastewater Treatment Plant, Town of Cable, Wisconsin

CABLE SD 1 STP is a municipal wastewater treatment plant located in the Town of Cable, Bayfield County, Wisconsin. The facility serves a small community of approximately 950 residents, providing secondary treatment to meet state and federal water quality standards. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater. With a designed capacity of 166.56 million gallons per year and an actual discharge volume of 223.34 million gallons, the plant manages flows that exceed its design capacity, indicating potential operational challenges or seasonal variations. The treated effluent is discharged into local waterways that drain into the Lake Superior basin. The plant's location in northern Wisconsin places it within a region of sensitive aquatic ecosystems, including coldwater streams and wetlands that support diverse fish and wildlife populations. Protecting water quality in this watershed is critical for downstream Lake Superior, the largest of the Great Lakes.

The plant discharges into tributaries of the Lake Superior basin, which ultimately flows into Lake Superior. This region features coldwater streams and wetlands that support brook trout, lake sturgeon, and migratory birds. Maintaining high water quality is essential to protect these sensitive aquatic habitats and the ecological health of Lake Superior.